For B2B partners requiring detailed technical documentation. A comprehensive, batch-specific Certificate of Analysis (COA) will be provided promptly upon request.

Parameter	Specification	Test Method
Identity
Product Name	Sodium Ascorbate (Buffered Vitamin C)	-
CAS No.	134-03-2	-
Molecular Formula	C₆H₇NaO₆	-
Key Specifications
Assay (on dry basis)	≥ 99.0%	HPLC / Titration
Appearance	White or slightly yellowish crystalline powder	Visual Inspection
Particle Size	≥95% passing 80 mesh	Sieve analysis
Loss on Drying	≤ 0.25%	Gravimetric method
Specific Rotation [α]²⁰_D	+103° to +108°	Polarimetric method
pH (10% aqueous solution)	7.0 - 8.0	Potentiometric method
Microbiological Quality
Total Aerobic Microbial Count	≤ 1,000 CFU/g	USP <61> / ISO 4833-1
Total Combined Yeasts and Molds	≤ 100 CFU/g	USP <61> / ISO 21527-2
Escherichia coli	Absent in 1g	USP <62>
Salmonella spp.	Absent in 10g	USP <62>
Heavy Metals & Contaminants
Lead (Pb)	≤ 1.0 mg/kg	ICP-MS
Arsenic (As)	≤ 0.5 mg/kg	ICP-MS
Cadmium (Cd)	≤ 0.5 mg/kg	ICP-MS
Mercury (Hg)	≤ 0.1 mg/kg	ICP-MS
Packaging & Services
Minimum Order Quantity (MOQ)	25 kg	-
Free Sample	Available (100g/bag)	-
Standard Packaging	25 kg / kraft bag or fiber drum	-
Shelf Life & Storage	24 months in a cool, dry place in tightly closed containers. Protect from light and moisture.	-
Custom Services	Private Labeling, Custom Blending, Formulation Support	-

Note: The specifications above define our standard Sodium Ascorbate (Buffered Vitamin C) product profile. These values are based on industry-grade benchmarks. We also provide customization options—such as adjustments to particle size distribution—to meet specific formulation requirements. Contact us to request the full Certificate of Analysis (COA) for detailed, batch-specific data and supporting compliance documentation.

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Sodium Ascorbate Powder

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