Sodium ascorbate

Sodium ascorbate

Product Name Sodium Ascorbate
CAS Number 134-03-2
Other Names Sodium L-ascorbate, Vitamin C sodium salt, E301
Molecular Formula C6H7NaO6
Molecular Weight 198.11 g/mol
Appearance White to off-white crystalline powder
Assay 99.0% – 101.0% (on dried basis)
pH (5% solution) 6.5 – 8.0
Loss on Drying ≤ 0.25%
Heavy Metals ≤ 10 ppm
Solubility Freely soluble in water, slightly soluble in ethanol
Package 25 kg fiber drum with double polyethylene liner

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Sodium ascorbate Structure

Synonyms: Sodium L-ascorbate, Vitamin C sodium salt, E301, L-Ascorbic acid sodium salt, Sodium ascorbate

Sodium ascorbate is the sodium salt of L-ascorbic acid (vitamin C), appearing as a white to off-white crystalline powder that is freely soluble in water and practically insoluble in ethanol. It is produced by neutralizing ascorbic acid with sodium bicarbonate or sodium hydroxide, yielding a stable, non-acidic form of vitamin C that is preferred in many pharmaceutical and food applications. Commercial grades are available as USP/BP/EP/FCC compliant material, with assay typically 99.0%–101.0% on the dried basis.

Because it is essentially neutral in solution, sodium ascorbate avoids the sharp acidity of ascorbic acid and is often chosen for formulations where low pH is undesirable—such as effervescent tablets, liquid supplements, and parenteral nutrition. In the food industry, it functions as an antioxidant and color preservative (E301), while in pharmaceuticals it serves as a vitamin C source in tablets, capsules, and injectables. The compound is also used in cell culture media and as a reducing agent in various chemical processes.

Product Highlights

  • High purity: 99.0%–101.0% assay, meeting USP/BP/EP/FCC monographs.
  • Neutral pH: Ideal for acid-sensitive formulations and effervescent systems.
  • Stable supply: Produced in cGMP-compliant facilities with annual capacity exceeding 5,000 metric tons.
  • Certifications: ISO 9001, FSSC 22000, Kosher, Halal, and REACH registered.
  • Custom packaging: Available in 25 kg drums, 500 kg totes, and custom sizes upon request.
  • Technical support: Full documentation and regulatory assistance provided.

Applications

  • Pharmaceutical formulations: vitamin C tablets, effervescent granules, injectables, and oral solutions.
  • Food and beverage: antioxidant, color stabilizer, and nutrient fortifier (E301).
  • Dietary supplements: capsules, powders, and functional drinks.
  • Personal care: skin care products for its antioxidant and collagen-supporting properties.
  • Biotechnology: cell culture media component and reducing agent.

Specifications

Parameter Specification
Assay (on dried basis) 99.0% – 101.0%
Appearance White to off-white crystalline powder
Identification Meets USP/BP/EP tests
pH (5% solution) 6.5 – 8.0
Loss on Drying ≤ 0.25%
Heavy Metals ≤ 10 ppm
Arsenic ≤ 3 ppm

Ordering & Supply

  • Packaging: 25 kg fiber drums with double PE liners; 500 kg bulk bags.
  • MOQ: 100 kg for standard packaging; flexible for trial orders.
  • Lead time: 3-5 business days (stock items)
  • Documentation: COA, MSDS, TDS, nutritional analysis, and regulatory statements available upon request.

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