| Names | |
|---|---|
| Preferred IUPAC name | Sodium [(2R)-1,2-dihydroxyethyl]-2-oxo-3,4-dihydro-2H-furan-5-yl phosphate |
| Other names | L-Ascorbic acid, monosodium salt, phosphate Ester-C Ascorbyl phosphate sodium SAP Monosodium L-ascorbyl-2-monophosphate |
| Pronunciation | /ˈsəʊdiəm əˈskɔːrbɪl fəˈsfeɪt/ |
| Identifiers | |
| CAS Number | 66170-10-3 |
| Beilstein Reference | 1862546 |
| ChEBI | CHEBI:61045 |
| ChEMBL | CHEMBL1432 |
| ChemSpider | 14236 |
| DrugBank | DB11363 |
| ECHA InfoCard | 100.226.504 |
| EC Number | EC 221-127-7 |
| Gmelin Reference | 104145 |
| KEGG | C15602 |
| MeSH | D020820 |
| PubChem CID | 6435282 |
| RTECS number | WS0946000 |
| UNII | K848JZ4886 |
| UN number | Not regulated |
| CompTox Dashboard (EPA) | DTXSID10769612 |
| Properties | |
| Chemical formula | C6H6Na3O9P |
| Molar mass | 322.06 g/mol |
| Appearance | White or almost white powder |
| Odor | Odorless |
| Density | D=0.7 g/cm3 |
| Solubility in water | Soluble in water |
| log P | -5.2 |
| Acidity (pKa) | 7.0 |
| Basicity (pKb) | 12.1 |
| Magnetic susceptibility (χ) | -54.0e-6 cm³/mol |
| Refractive index (nD) | 1.62 |
| Viscosity | Viscous liquid |
| Dipole moment | 3.6 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 389 J·mol⁻¹·K⁻¹ |
| Pharmacology | |
| ATC code | A11GA01 |
| Hazards | |
| Main hazards | May cause skin and eye irritation. |
| GHS labelling | GHS07, Warning |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H319: Causes serious eye irritation. |
| Precautionary statements | P264, P270, P305+P351+P338, P337+P313 |
| Flash point | > 210 °C |
| Explosive limits | Not explosive |
| Lethal dose or concentration | LD50 (oral, rat) > 5000 mg/kg |
| LD50 (median dose) | > 5000 mg/kg (Rat, oral) |
| NIOSH | No results found |
| PEL (Permissible) | Not established |
| REL (Recommended) | 142.8 mg |
| IDLH (Immediate danger) | Not established |
| Related compounds | |
| Related compounds | Ascorbic acid Magnesium ascorbyl phosphate Calcium ascorbate Sodium ascorbate Ascorbyl palmitate |
| Section | Details |
|---|---|
| Product Name | Sodium Ascorbyl Phosphate |
| IUPAC Name | Sodium ([(2R)-2-oxo-3,4-dihydro-2H-furan-5-yl]methyl phosphate) |
| Chemical Formula | C6H6Na3O9P |
| Synonyms & Trade Names | SAP; L-Ascorbic acid, monosodium phosphate ester; Sodium L-ascorbyl phosphate |
| CAS Number | 66170-10-3 |
| HS Code & Customs Classification | 2936.27 (Vitamins and their derivatives, Vitamin C and its derivatives – classification subject to regional interpretation for finished or intermediate grade; for non-pharmaceutical, technical and cosmetic grades, local customs authority may require further sub-classification details based on intended use and specification.) |
Industrial production of Sodium Ascorbyl Phosphate involves direct phosphorylation of ascorbic acid with suitable alkali and phosphorylating agents under controlled pH and temperature. Raw material quality—ascorbic acid purity and phosphate source—is critical for batch consistency and downstream purification. Grade dependency centers on intended application: cosmetic, pharmaceutical, or food grades demand progressively higher purity, tighter impurity profiles, and stricter microbial limits. Cosmetic-grade generally allows for moderate specification windows on phosphate byproducts; higher grades require narrower variability, driving purification intensity. Application sensitivity is seen in stability: SAP grade for skin care must maintain color and solubility profile in complex formulations, while food grade prioritizes trace contaminant removal.
Process route selection balances yield, impurity risk, and operational safety. Continuous processing can improve lot-to-lot reproducibility, but requires rigorous in-process control of pH, temperature, and reactant ratios. Batch processes allow for close monitoring and are favored for higher purity demands. Common impurity sources include over-phosphorylated byproducts, incomplete neutralization products, and raw material carryover. Raw material selection, in-process monitoring via titration or chromatography, and targeted crystallization steps address batch quality risk. Consistency relies on frequent system checks and regular calibration of analytical methods. Release criteria always reflect the most conservative requirement between internal standards and customer contract specifications for the designated grade.
HS Code assignment draws from internationally recognized Vita-C analog groupings, but local customs interpretation may vary. Manufacturers routinely consult regional import authorities pre-shipment for grade-specific documentation to avoid misclassification or customs delays. Any update in customs rulings impacts documentation issued with shipments, and feedback from downstream users informs revision of trade name declarations and paperwork alignment with local practices.
Manufacturing lines typically produce Sodium Ascorbyl Phosphate as a white or slightly off-white powder. No significant odor is detectable in standard batches. Manufacturers see minor variations in color and bulk density based on grade, feedstock, and finish-drying conditions. Some cosmetic and pharmaceutical applications require tighter controls on appearance—these customer requirements often drive additional purification or screening steps but may result in yield loss and higher process costs.
The compound decomposes before reaching a precise melting point, consistent with phospho-ester structure. Manufacturing experience shows any melting-like behavior usually comes from residual moisture or byproducts, not the product itself. Boiling point and flash point are not technically meaningful in normal use; thermal decomposition becomes the critical parameter for formulation and storage.
Bulk density is process-dependent and varies according to drying and milling steps. Products for direct tablet pressing or powder blending may require customized densification. Loose fill density values can range widely; per customer request, many production lines routinely record tap density and flowability data alongside moisture content.
In our experience, this material remains chemically stable if kept dry, protected from light, and handled in low-humidity air. Degradation tends to increase in the presence of metal ions, alkaline pH, or strong oxidants. The addition of antioxidants and use of inert gas in packaging are common responses to customer stability requests. In certain process streams, contact with iron or copper must be completely excluded to prevent rapid color change and loss of ascorbate potency.
Dissolution proceeds best in deionized or distilled water at ambient temperature. High-concentration solutions may require prolonged mixing, particularly with dense powders. Some applications necessitate pH adjustments or chelating agents to support long-term solution clarity. Residues from upstream synthesis (such as inorganic salts) can influence both solution appearance and downstream filtering requirements.
Specifications are tailored to the grade. Cosmetic, pharmaceutical, and feed applications differ in assay limits, impurity profiles, and microbiological requirements. Production runs for premium grades undergo additional tests and may require lower residual moisture.
| Parameter | Typical Cosmetic Grade | Typical Pharma Grade |
|---|---|---|
| Assay | Range defined by customer/compendial demand | Higher minimum, may align with pharmacopoeia |
| Impurity Profile | Process- and source-dependent | Stricter, including heavy metals |
| Moisture | Grade-specific maximum | Often lower spec limits |
The final release standard is subject to internal quality control criteria and customer requirements.
Process impurities typically stem from incomplete reaction, raw material carryover, or thermal degradation. In-process controls monitor phosphate, sulfate, and sizing agent residues, as well as metal contamination. Each route—direct phosphatation, semisynthetic routes, or continuous processes—yields slightly different impurities. Specific impurity limits conform to grade requirements and customer or regulatory guidelines.
Assay is most often verified by titration or chromatographic methods. Impurity analysis draws from validated in-house protocols or established pharmacopeial standards, as dictated by product destination and batch application. Use of third-party analytical standards and reference samples ensures method traceability.
Ascorbic acid and sodium hydrogen phosphate form the core starting materials. Sourcing criteria prioritize purity, batch consistency, and supply chain reliability. Trace metal content is a key concern, especially for pharmaceutical or personal care routes, leading to pre-approved vendor lists and regular raw material audits.
Esterification with controlled addition of phosphate donor under alkaline or neutral conditions provides the favored synthetic path. Solutions require careful temperature and pH control to minimize side reactions such as dehydroascorbate formation. Some regional regulations restrict allowed catalysts and processing aids.
Operators adjust time, temperature, and pH profiles based on real-time monitoring and batch history. Process-generated byproducts are routinely purged through selective precipitation, filtration, and crystallization techniques. Automated controls track critical variables, but final purity relies on both in-process sampling and end-point inspection.
Later stage operations focus on moisture removal and particle size adjustment. Batch release hinges on chemical assay, impurity control, residual solvent checks, and appearance verification. Documented traceability, stability testing, and retained sample archiving underpin every release decision.
Customers use Sodium Ascorbyl Phosphate in formulations requiring controlled ascorbate release or phosphate stability. Reduction-oxidation reactions and further esterification lead to a range of derivatives. Reaction rates and yield depend on process variables and downstream requirements.
Manufacturers employ moderate temperatures with aqueous solvents and carefully buffered systems. Select catalysts and deoxygenated atmospheres help prevent unwanted oxidation, which otherwise reduces final product yield and shelf life. Continuous improvement projects often focus on catalyst recovery efficiency and minimizing cross-contamination.
Main downstream products include ascorbic acid derivatives and phosphate esters suited for antioxidant, skin care, and nutritional use. End-users may further modify or encapsulate for targeted delivery or stability, conditioned by the specific sodium ascorbyl phosphate grade.
Production and warehouse personnel store this material in low-humidity, ambient-temperature spaces out of direct light. Inert gas blanketing further extends shelf life, especially for export packaging and high-purity grades. Opened containers require immediate resealing to avoid hygroscopicity-driven degradation.
Material choice for packaging depends on grade and customer logistics. High-density polyethylene drums and aluminum-lined fiber cartons address most stability and regulatory needs. For laboratory or small-batch use, amber glass offers added light protection but increases cost.
Shelf life varies by grade, packaging, and storage. Discoloration, caking, and off-odor serve as first indicators of degradation. Retention studies and customer-reported stability data underpin ongoing shelf life definition; this information is revised as processes evolve.
Hazard identification aligns with primary component and process-related impurities. In-house handling guidelines address both acute and chronic exposure concerns, including local exhaust requirements, PPE recommendations, and disposal protocols.
Labels and SDS documentation reference the presence of low toxicity under controlled use, but caution against inhalation of dust or extended skin contact due to possible mild irritation. External certifications or third-party assessments may be necessary for food, feed, or medical applications.
Oral and dermal toxicity assessments, where available, show low systemic toxicity in standard applications. Ongoing review of published toxicological studies informs revisions to workplace exposure policies. Customers in regulated industries may request batch-specific statements or extra analytical support.
Workplace air monitoring programs and periodic health surveillance help manage risk. Engineering controls such as dust extraction, sealed transfer, and automated weighing minimize operator exposure. Written training, batch documentation, and incident review support long-term health and process safety goals.
Sodium Ascorbyl Phosphate production depends heavily on the type and grade of ascorbic acid sourced, reactor design, and downstream processing equipment. During peak pharma and personal care demand periods, bottlenecks can arise in purification and drying steps. Our annual output scales according to raw material availability and validated batch runs. Seasonality, particularly with vitamin C feedstock, creates fluctuations. Actual monthly available stock can only be quoted based on current inventory and confirmed inbound shipments.
Lead time often reflects both raw materials delivery and ongoing batch scheduling. Standard lead time for typical cosmetic or personal care grades ranges from two to four weeks ex-works, provided there are no upstream delays with vitamin C or phosphate intermediates. Specialized grades involving extra purification or customized QC criteria may require an extended timeline. Minimum order quantity varies by standard packaging but rarely falls below multiple kilograms, as required for routine lot traceability and cost efficiency. For pre-registered clients, MOQ flexibility depends on current production cycle alignment and packaging inventory.
Standard packing for Sodium Ascorbyl Phosphate includes multi-layer fiber drums with inner polyethylene liners, available in several capacities. Packaging selection is based on batch size, shelf-life considerations, and destination market regulations. For personal care or food applications, additional protective barrier solutions can be supplied. Custom packaging volumes must be validated for compatibility and stability prior to acceptance for contract manufacturing.
Logistics choices depend on material hazard classification, customer delivery point, and shipment volume. Ocean freight dominates for bulk export, while air shipping supports smaller, urgent batches at the customer’s expense. Payment terms follow industry-standard practices, typically with partial advance and balance against shipping documents. Currency selection and credit terms can shift based on customer status and prior transaction performance. Insurance and documentation follow local export compliance mandates.
Feedstock cost for Sodium Ascorbyl Phosphate manufacturing relies on the price of pharmaceutical-grade ascorbic acid and phosphate donors. Ascorbic acid spot market prices shift in response to crop yields, environmental policies in major production regions, and solvent feedstock pricing. Phosphate intermediates reflect mining, energy, and logistics costs. Freight costs also impact landed compound cost, particularly during port congestion or trade disputes.
Major pricing differences stem from feedstock purity, the presence or absence of residual solvents, and batch testing certification. Personal care and food-contact grades command higher prices because they require stricter impurity profiles and batch trace documentation. Packaging adds a secondary layer of cost variation. Regional certifications, for example, REACH in Europe or JP/FCC grades in Asia, further drive price premiums due to the need for ingredient traceability and specialized release testing.
Agricultural cycles affecting corn, which underlies most ascorbic acid production, directly impact overall input costs. Regulatory actions in core raw material-producing countries, energy prices, and any disruptions to phosphate supply all translate quickly into heightened volatility. Exchange rates, especially for dollar- and euro-linked contracts, must also be factored into monthly price adjustments.
Over the past decade, China has established dominance in Sodium Ascorbyl Phosphate core production, supported by integrated vitamin C upstream plants and specialized process development units. North American and European demand is heavily geared toward high-purity cosmetic and personal care formulations. India’s profile remains driven by lower volume, price-sensitive applications. Japan operates with strict domestic regulatory requirements, favoring documented batch origin and stringent QC.
US and EU buyers prioritize compliance and supply chain transparency, often auditing manufacturers for cGMP and REACH registration status. The willingness to pay for independently certified product is stronger in these regions, which supports sustained price differentials relative to other markets. China remains the base for most technical and food grade volumes, benefitting from domestic feedstock and scale. Japan’s requirements for documentation and consistency drive process validation costs, leading to higher ex-factory prices. India is both a consumer—where price sensitivity is critical—and an emerging producer, but export volumes remain concentrated in China.
Expect modest upward pressure on Sodium Ascorbyl Phosphate prices by 2026, driven by ongoing regulatory tightening in the cosmetic and food ingredient sectors, and periodic instability in upstream ascorbic acid markets. Input volatility, logistics costs, and environmental policy shifts in China will continue influencing landed prices for global customers. Higher traceability and lower impurity grades will further rise in price as compliance costs escalate, particularly for cross-border shipments into regulated markets.
Forecasts reflect spot and term contract data collected from direct manufacturer sales records, industry reports, and import/export statistics published by major producing and consuming countries. Key variables include feedstock cost indices, demand projections by sector, and regulatory bulletin tracking. Periodic validation is based on actual transaction settlements and customer feedback from quarterly supply chain assessments.
Sustained raw material price shifts have led to active search for secondary ascorbic acid suppliers in non-Chinese source countries. Major end users increasingly request full chain-of-custody documentation and additional third-party contaminant screening.
New regulatory frameworks in the EU require expanded ingredient traceability and evidence of batch-specific contaminant controls. Similar discussions are underway in the US regarding cosmetic ingredient safety, which may raise import documentation requirements. Asia-Pacific customers now request REACH and K-REACH aligned documentation even where not legally mandated, especially for premium and export-oriented brands.
To address volatility and compliance demands, major Sodium Ascorbyl Phosphate producers have restructured raw material procurement strategies, expanded in-house testing capabilities, and invested in adaptive packaging to streamline global logistics. Strong customer partnerships, combined with IT upgrades for batch release reporting and shipment tracking, help offset the pressure from more frequent quality audits and documentation requests.
Sodium Ascorbyl Phosphate sees operational use in personal care formulations, industrial skin protection systems, and select pharmaceutical intermediates. Most inquiries originate from cosmetic labs designing antioxidant serums, anti-aging creams, and leave-on skin treatments. Formulators in sun care and scalp care also turn to this material for its oxidative stability compared to ascorbic acid. In industrial environments, customers request this product for corrosion inhibition in sensitive manufacturing set-ups where organic acids cannot be tolerated.
| Application | Recommended Grade(s) | Typical Key Parameter Focus |
|---|---|---|
| Face Serums, Creams | Cosmetic Grade (ultra-low metal content, high purity) | Appearance, assay, odor, heavy metal limits |
| Sun Care and Hair Care | General Cosmetic Grade | Water-solubility, pH, color stability |
| Pharmaceutical/Intermediate | Pharma or Custom Grade (defined by customer spec) | Impurities pattern, residual solvents, assay |
| Industrial Systems | Technical or Industrial Grade | Assay, inorganic impurity profile |
Cosmetic lines always focus on total assay, color, and trace metals. Applications in leave-on formulations require strict odor control and purity. Customers in regulated markets often request custom documentation on traceability and allergen content. Incoming audits from multinational beauty brands frequently review batch homogeneity, microbial control steps, and traceability to starting material lots.
Industrial sectors tolerate slightly wider assay windows but often specify tight controls on inorganic phosphate and byproduct residues, especially if downstream processing steps rely on precise pH control.
Clarity about the purpose—be it skin serum, rinse-off product, or a technical intermediate—determines which tests take priority in batch release. Personal care formulators focus on aesthetic and tactile parameters. Technical buyers from industrial sectors favor process yield and impurity control.
Quality audits start with harmonization to regional standards such as EU Cosmetic Regulation or US FDA. For exports to Japan or South Korea, customers sometimes add requirements on specific trace impurities and bioburden. Regulatory status sometimes shifts based on intended function (cosmetic vs. quasi-drug), not just formula composition.
Grade selection hinges on metal content, residual solvents, moisture, and byproduct content. Manufacturing batches for serum and eye cream end-uses typically align to stricter impurity limits. Technical intermediates or blends for cleaning applications sometimes accept marginally higher trace value counts when justified by supplier quality documentation.
High-throughput production lines drive demand for multi-ton packaging and standard-pricing grades, whereas labs piloting next-generation skin care sometimes request kilo-lot batch production with custom certificates of analysis. Pricing models reflect assay, documentation, and packing requirements.
Customers pursuing new formulation launches or switching suppliers usually start with sample validation. Typical in-house support includes providing a COA, recent microbiological test results, and reference chromatograms for best-fit grades. Our QC team tracks feedback on clarity, solubility, and stability across representative matrixes submitted by end users, refining specifications for the next commercial order.
Consistent quality output does not happen by chance. Our production lines for sodium ascorbyl phosphate are certified under comprehensive quality management frameworks. ISO 9001 forms the foundation of our management architecture, providing traceability and risk management protocols at every stage. All manufacturing and release activities are reviewed by trained internal auditors and specialists. Supply chain inputs, batch manufacturing records, deviation logs, and change controls follow documented procedures. Each certification audit includes process walkthroughs, which examine how real-time process data matches prescribed control limits in ongoing production batches.
Product-grade and application context determine which certifications and statements accompany each consignment. Cosmetic, food, and pharmaceutical customers present sector-specific needs. Our quality system supports the provision of both GMP certificates for appropriate grades and declarations covering allergen status, GMO status, or BSE/TSE statements, depending on the order specification. For each regulatory request, documentation is cross-verified against the lot’s raw material trace, batch records, and in-process findings. We keep both original certificates and periodic updates available for regulatory submission or customer quality audits.
Each delivery includes a complete certificate of analysis based on both in-house QC laboratory results and external verification, when requested by the customer. Test items are selected according to grade and downstream requirements. For applications with stricter contaminant or impurity controls—such as food or pharmaceutical use—analyses expand to cover additional heavy metals, microbial counts, and stability data based on the relevant pharmacopeial guidelines or local technical regulations. Shelf life declarations and analytical method summaries are also provided where required. All documents maintain batch-specific traceability to the source records within our laboratory information management system.
Production for sodium ascorbyl phosphate operates year-round, supported by dedicated line capacity and prioritized raw material procurement. Customers working on developmental projects or scaling up to commercial volume receive short-cycle supply planning support. Minimum order quantities and supply intervals adjust to reflect both routine and peak demand scenarios. Adaptation to changing consumption or inventory plans relies on real-time monitoring of production bottlenecks, utility uptime, and staff allocation. Our commitment is to synchronize order execution with your supply chain events—product launches, market entry, or seasonal ramp-up cycles.
We maintain buffer inventories of both key intermediates and finished sodium ascorbyl phosphate to absorb supply chain turbulence. Manufacturing prioritizes critical quality attributes: end-of-line assay, moisture content, and specific impurity classes defined by application. Batch consistency relies on routine calibration of process monitoring instruments and verification of in-line purification equipment. When order frequencies rise or specialized grade variants are requested, production planning aligns with both forward contracts and immediate customer requirements. By harmonizing routine output with urgent requests, we consistently provide on-time delivery to formulators, blenders, and regional packers.
Technical sample requests drive project qualification and formulation approval. The sample request process initiates with defining the intended use, required certificate scope, and documentation needs. Laboratory-grade, food-grade, or cosmetic-grade samples ship with supporting batch records and primary test data. Stability or compatibility assessments for a new matrix or end-use are supported by allocating sample volumes large enough for multiple analytical runs and prototype production. Commercial teams coordinate with technical staff to ensure delivery matches both the grade requirements and the intended application scenario.
Variable demand, seasonal production, or project-driven supply cycles need engagement that exceeds rigid contract supply lines. We offer volume scaling strategies—including surge manufacture, staggered shipments, and rolling forecasts to incorporate customer pipeline changes. For partners requiring qualification lots, pilot-scale output, or conversion to new regulatory grades, technical liaisons define the production and release schedule. Custom labeling, split batch consignments, or packaging format alterations integrate with manufacturing lead times and logistics resources. Communication between customer procurement, technical managers, and our supply team clarifies revised commitments and keeps order fulfillment in phase with end-market changes.
In current sodium ascorbyl phosphate (SAP) development, formulators and process chemists focus on stability during formulation, compatibility with a range of cosmetic actives, and reducing discoloration during storage. The demand for SAP in water-based formulations has prompted tailored grade adjustments to manage solubility and pH sensitivity. Researchers monitor oxidative degradation, especially in high-activity environments or multi-component blends, since color shifts and activity loss impact both process yields and product aesthetics.
Raw material selection prioritizes pharmaceutical-grade L-ascorbic acid sources with documented impurity profiles, combined with dialysis or targeted crystallization techniques to minimize inorganic contaminants. The process logic for SAP production varies, but manufacturers emphasize minimizing hydrolysis and phosphate-related byproducts by controlling process temperature, reaction time, and pH buffers. Continuous feedback from downstream cosmetic and personal care producers shapes in-house R&D efforts toward grades that resist breakdown in light-exposed and oxygen-permeable packaging.
New demand comes from skin-brightening serums, sunscreen boosters, and post-sun recovery treatments, where mild pH and compatibility with modern UV filters are required. Formulators in Asia and North America show increased interest in SAP for scalp and hair care, targeting antioxidant delivery in rinse-off and leave-on systems. Analytical chemists cooperate closely with customers to define grade, heavy metals, and residue-by-solvent profiles to enable market entry into regulated sectors or regions.
Key controlled parameters include water content and phosphate analogues, as these influence downstream lotion texture and product clarity. High-humidity production lines require closed systems and nitrogen blanketing to prevent hydrolytic instability and maintain a conforming off-white appearance. Manufacturers address rapid degradation risks via optimized post-synthesis washing and standardized particle-size protocols. Breakthroughs in continuous-flow synthesis offer tighter impurity control and batch reproducibility, but bring new cleaning validation demands to prevent cross-contamination with legacy ascorbyl derivatives.
In the next five years, SAP demand will trace the growth of the cosmetic and personal care segments, especially premium skin care, and sun protection markets. Suppliers anticipate expansion in both emerging and established markets, where local regulations drive differing grade specifications and documentation needs. Volatility in raw material sourcing and increased oversight in heavy metals and residual solvents may influence batch release timing and cost structure, necessitating real-time supply chain adjustments.
Technology trends point toward integrated process monitoring and in-line analytical controls. Grade differentiation relies on more selective purification steps, targeting low-residue, low-hue materials suitable for clear formulations. Automation of in-process controls, such as real-time phosphate quantification and spectrophotometric color sorting, enhances consistency for global cosmetic brand customers. Expansion of process route options, particularly non-solvent alternatives and enzymatic pathways, promises to cut waste generation and energy input.
Sustainability pivots on certified renewable raw-material origins, lower phosphate discharge during manufacturing, and closed-loop water recovery. Process upgrades focus on decreasing carbon footprint by recovering process reagents and integrating efficient filtration systems. SAP manufacturing plants align documentation and internal audits with global green chemistry policies, targeting continuous reduction in hazardous byproducts and efficient solid-waste separation for external recycling.
Technical assistance centers on pre-shipment discussions with R&D, regulatory, and production teams at the customer’s site. Joint analytical verification and batch-specific CoA reviews help address compliance requirements before full-scale incorporation in formulations. Clients receive support in identifying root causes of instability, hue shifts, or shelf-life discrepancies related to upstream or downstream processing conditions.
Our application team collaborates directly with end users and contract manufacturers to tailor the integration of SAP in novel formula matrixes. Stability testing guidelines and additive screening protocols are shared to mitigate color, odor, or viscosity changes after scaling up. For pH-sensitive or high-clarity applications, support involves co-designing buffering and compatibilization sequences for seamless SAP dispersion and minimal grit.
After release, we track technical feedback from both production and QA lines at the customer's site and on the market. In case of formulation challenges or off-spec findings, rapid diagnostic tools and samples from index reference lots are provided for comparison and troubleshooting. Batch traceability and full documentation enable swift root-cause analysis and decision making for any quality disputes or process changes.
Our production plant specializes in Sodium Ascorbyl Phosphate (SAP), a stable vitamin C derivative engineered for scale and technical reliability. Years of hands-on process development allow us to meet industrial buyers’ requirements for high-volume, consistent quality SAP. We oversee all steps from raw material sourcing to downstream processing and shipment, giving full control over the product delivered to clients managing large-scale formulations.
Manufacturing SAP demands precise temperature control and close monitoring of pH throughout the process. We use dedicated equipment and follow validated process protocols to prevent batch-to-batch fluctuations. Our team actively reviews real-time production data and quality indices for every lot. By adjusting processing parameters based on analytical results, our technical staff maintains color, particle profile, and active content to meet defined targets each time.
SAP features prominently in large-batch cosmetics, topical skin systems, and personal care manufacturing requiring vitamin C with oxidation stability. Multinational brands and industrial tollers turn to SAP for formulations exposed to air, light, and processing stress. Many cleaning and preservation product developers in Asia and Europe use SAP to boost antioxidant claims without concern for rapid degradation. Its water solubility streamlines integration into final product lines where process temperatures or storage durations would break down standard ascorbic acid.
Our analytical staff runs spectrophotometric and HPLC validation on every production batch. Analysts measure not only the assay of SAP but also inspect for heavy metals, microbiological parameters, and moisture control. By operating in a closed and humidity-regulated area of the plant, we reduce risk of contamination and degradation during storage and packaging. Quality audits and laboratory records remain available for long-term partners managing regulatory submissions or in-house benchmarking against new suppliers.
Factories depend on uninterrupted material flow. We offer industrial SAP in multi-layer lined fiber drums and high-barrier flexible sacks, with gross weights set for pallet-friendly, safe transport. Each packaging run undergoes leak check and humidity resistance testing. Warehousing close to major shipping ports keeps logistics timelines predictable, and shipment scheduling uses direct data from our batch management system. Inventory plans keep clients informed on lead times to avoid downtime or supply gaps.
Process engineers and formulators frequently require technical insight for SAP integration. Our technical team consults on SAP’s behavior under heat, pH, and mixing protocols. We supply application guidance covering chemical compatibility and reaction risks drawn from years of customer feedback and in-house pilot trials. Custom residue analyses and particle size modifications can be arranged with our process development lab when scale-up requires it.
Purchasers and supply chain teams control costs and line stability by engaging manufacturers holding full product stewardship. Long-term contracts with our plant anchor pricing to integrated raw material procurement, while scale buyers receive priority access during global supply shifts. Our supply arrangements reduce handling risks, and all trade documentation can be customized to align with complex multinational shipping or compliance needs. By working directly with producers, end users and distribution partners both gain a higher degree of predictability in product behavior, regulatory transparency, and year-over-year material availability.
Direct-from-factory supply of SAP supports process stability, timely manufacturing, and commercial security for businesses at every tier of the supply network. Our plant’s output reflects dedication to batch quality, secure packaging, technical adaptability, and practical support for industrial partners facing real-time production and regulatory pressures.
In the cosmetics field, formulators often choose Sodium Ascorbyl Phosphate (SAP) because it resists oxidation far better than pure ascorbic acid and remains water-soluble. We manufacture SAP in batches aimed at the international personal care market, so we monitor stability as a core part of our production and technical support routines. Years of in-house stability testing and customer feedback point toward a pH sweet spot between 6.0 and 7.0 for incorporating SAP into finished formulations.
Once pH drops below about 5.5, SAP loses its chemical advantage. Acidity starts to promote undesired hydrolysis, eventually breaking down into dehydroascorbic acid and other fragments. From our process data, we see color changes and potency reduction at these lower pH settings if mixtures sit for months. Above pH 7.5, we see increased risk of precipitation and product cloudiness in trial batches sent to long-term testing, which affects final visual acceptance and active concentration. Customers running pilot lines for toners and creams often confirm these findings as well.
Our technical team recommends adjusting the base formulation water to a pH just under 7.0 before SAP goes in, allowing a minor drop once other actives, chelators, or viscosity agents blend in. Using phosphate buffers or small additions of sodium hydroxide provides good control and keeps the resulting product in the optimal window. During production scale-up, having a pH meter on hand avoids drift and keeps yields consistent from batch to batch. We can provide formulation tips for both batch and continuous processing to maintain target pH.
Staying inside the 6.0–7.0 range preserves SAP’s antioxidant role throughout shelf life. In high moisture emulsions or gels, the right pH slows vitamin C conversion and keeps the product visually appealing — no yellowing or sediment, backed by our test data. This also improves lot consistency and minimizes customer complaints due to unexpected breakdown, which in turn supports your end-user claims. We regularly monitor stability for up to 24 months under elevated temperature, and out-of-range pH consistently correlates with SAP loss and off-spec outcomes.
We support our clients with detailed specification sheets, batch-by-batch COA data, and guidance on in-process pH measurement. Having handled hundreds of tons of SAP since our original scale-up, we recognize that not all source waters and excipient blends will produce identical pH responses. Our team responds quickly to troubleshooting requests; we help partners select compatible emulsifiers, preservatives, and packaging that match the slightly alkaline environment SAP favors.
If new raw materials introduce unexpected pH swings, we help you trial corrective blends without risking product recall or extended lead times. With direct manufacturing oversight, we keep batch traceability and adjustment options open until the product hits your filling line. This cuts down on formulation loss and prevents costly downgrades.
For clients aiming to advertise stable vitamin C activity, adhering to our pH guidance provides a defensible technical foundation. We do not recommend relying on stabilized SAP claims if the final blend falls outside pH 6.0–7.0 for prolonged periods. Our experience shows this window delivers the best trade-off between oxidative resistance and user safety, while preserving the properties that set SAP apart from other vitamin C forms.
From decades on the production floor, we have met countless purchasing, planning, and quality control teams from both multinationals and local operations. Bulk sodium ascorbyl phosphate isn’t a speculative ingredient; it feeds into daily production schedules for large personal care, cosmetics, and pharmaceutical applications. Knowing what works in a real factory shapes our approach to order quantity, lead time, and process transparency.
We set our minimum order quantity at 500 kilograms. This isn’t arbitrary. The production line, blending, and final packaging all run at optimal efficiency with this batch size. Below that, the setup costs and downtime between runs create inefficiencies—resources get tied up, and crew time goes underutilized.
Our 500-kg MOQ supports economic production cycles and stable quality. It also enables us to stay lean on our raw material inventory, so we track quality and shelf life closely. Many downstream manufacturers—especially those making large-batch formulations—prefer ordering at or above this threshold to streamline inbound logistics and keep their own lines moving. This quantity fills a full pallet with our standard 25-kg fiber drums. Each drum includes double PE liners to protect against oxidation and moisture, preserving the vitamin C derivative’s activity through transit and storage.
We operate on a four-week average lead time for confirmed bulk orders, counted from the date all purchase and technical details are settled. Several factors drive this timeframe. First, sodium ascorbyl phosphate relies on high-purity ascorbic acid feedstock and specialty phosphating reagents; sourcing, handling, and analytical controls require diligence. Production then involves multiple synthesis, filtration, and drying steps before comprehensive quality analysis.
QC takes up the largest share of this period. We validate every batch for assay, heavy metals, microbial load, and residual solvents. There is no shortcut if we want our product to meet international standards for skin care and pharmaceutical grades.
Packing is straightforward once the batch passes—drums are sealed, labeled with batch and expiry data, and moved to the outbound dock. For regular annual contracts, we can work with customers to align batch production dates to minimize warehousing. We keep a tight rein on logistics and paperwork, so once you have a confirmed shipping schedule, our team ensures the process moves as planned. Export documentation, such as certificates of analysis, MSDS, and customs materials, can usually be prepared within two working days after packing.
Our largest clients require responsiveness and predictability, two things we build into operations from the outset. Real-time tracking on open orders is part of our service. Still, no process is immune to raw material bottlenecks or utility disruptions. We address these risks by maintaining relationships with multiple upstream chemical producers and investing in backup power systems for our synthesis lines.
New clients sometimes ask about splitting the MOQ between grades or shipments. We review these requests case by case, looking for ways to help without impacting our plant schedule or compromising bulk pricing. Experience tells us that consistent production blocks, not fragmented runs, yield top-notch material—backed by a batch record we’re prepared to share.
Solid MOQ guidelines and reliable timelines save both sides time and resources. Our approach comes from years of direct manufacturing, not from distributor guesswork. For specialized requests, our technical team is ready to clarify process details and regulatory compliance. From mixing tank to packed drum, every gram comes from our site, under our control, every step of the way.
Reliable compliance with REACH and other international chemical regulations stands as a baseline expectation in our role as a direct manufacturer of Sodium Ascorbyl Phosphate. Navigating the alphabet soup of evolving regulations across Europe, the Americas, and the Asia-Pacific region has become part of our daily workflow long before market entry even comes into the picture.
Producing this material in dedicated facilities, we monitor every process stage—from raw material intake and reaction controls, through purification, to the last packed drum. Every batch record connects to a rigorous internal audit trail, tying physical inventory to corresponding testing data and regulatory documentation. Our technical compliance team keeps a line open to updates from ECHA, as well as other regulatory bodies around the world, making preemptive adjustments whenever legal obligations or hazard classifications change. For Sodium Ascorbyl Phosphate, the substance registration is maintained under REACH. Each shipment is traceable all the way back to initial registration data, full analytical batch records, and safety data sheets updated to the latest GHS and CLP requirements.
Requirements for import and transport paperwork rarely surprise us at this point. We make sure our customers receive dossier-compliant Safety Data Sheets—issued in multiple languages and referencing the exact batch manufactured. For REACH, these SDSs confirm registration status, show substance identity, and ensure clear hazard and precautionary information. We keep extended safety data on file, including test reports on ingredient purity, stability, and byproduct profiles, which can be shared with regulatory authorities or supply chain partners as needed.
Beyond SDS and REACH registration, we maintain detailed specifications, certificates of analysis, and certifications that may be needed for cosmetic or food end-use markets, such as Kosher, Halal, and Non-GMO declarations. Most importers need a full regulatory portfolio: composition positioning, toxicological summaries, and guidance for transport under IMDG/ADR, based on Sodium Ascorbyl Phosphate’s classification. We ensure every document has current, batch-specific data and is formatted to meet the requirements of customs and regulatory bodies in each importing country.
We work closely with supply chain stakeholders and rarely encounter issues where our documentation or compliance standards fall short. In our experience, transparency and completeness drive smoother logistics and product launches. For Sodium Ascorbyl Phosphate, regulatory status isn’t a checkbox; it ties directly to our long-standing relationships in markets with strict oversight, from the EU to North America and Asia. If local authorities request supporting documents, our regulatory affairs group responds swiftly with digital or hard copies, referencing the actual batch shipped. These controls ensure that product movement isn’t stalled by missing, outdated, or incomplete paperwork.
Complex regulation is constant in this sector, especially as new uses and end applications for Sodium Ascorbyl Phosphate emerge. We adjust internal processes on a rolling basis to stay a step ahead of regulatory change, participating in cross-industry working groups and updating documents months before official deadlines where possible. Our technical and sales support teams work with customers to resolve any paperwork or compliance queries in the context of specific country requirements.
In summary, we deliver Sodium Ascorbyl Phosphate with robust compliance assurance, underpinned by first-hand experience and documented proof, supporting exports and enduring partnerships across regulated markets. All documentation—registration, SDS, certificates of analysis, and compliance statements—ships ready for immediate use in customs clearance, product development, and customer assurance.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales7@bouling-chem.com, +8615371019725 or WhatsApp: +8615371019725
