Product Name: Calcium Ascorbate (VC-Ca)
CAS No.: 5743-27-1
Molecular Formula: C₁₂H₁₄CaO₁₂
Molecular Weight: 426.31
1. Product Description
Calcium Ascorbate is the calcium salt of ascorbic acid (Vitamin C). It combines the antioxidant properties of Vitamin C with an additional source of calcium. Compared with pure ascorbic acid, Calcium Ascorbate is less acidic, more stable, and suitable for a wide range of applications.
2. Specifications
2.1 Food Grade (FCC / USP Standard)
| Item | Specification |
|---|
| Appearance | White or slightly yellow crystalline powder |
| Identification | Positive |
| Assay (as C₁₂H₁₄CaO₁₂) | ≥ 97.0% |
| Ascorbic Acid content | 80–82% |
| Calcium content | 8–10% |
| pH (10% solution) | 6.0 – 7.5 |
| Loss on Drying | ≤ 0.25% |
| Residue on Ignition | ≤ 0.1% |
| Heavy Metals (Pb) | ≤ 10 ppm |
| Arsenic (As) | ≤ 3 ppm |
| Microbiological | Total Plate Count ≤ 1000 cfu/g; Yeast & Mold ≤ 100 cfu/g; E. coli & Salmonella: Negative |
2.2 Industrial Grade
| Item | Specification |
|---|
| Appearance | White to light yellow crystalline powder |
| Assay (as Calcium Ascorbate) | ≥ 95.0% |
| Calcium content | 7–10% |
| pH (10% solution) | 5.5 – 7.5 |
| Loss on Drying | ≤ 0.5% |
| Insoluble Matter | ≤ 0.5% |
| Heavy Metals (Pb) | ≤ 20 ppm |
| Arsenic (As) | ≤ 5 ppm |
| Microbiological | Not strictly controlled (depending on customer requirement) |
3. Applications
Food Grade:
Nutritional supplement in food & beverages (juices, dairy products, confectionery, functional drinks).
Dietary supplements (capsules, tablets, powders).
Antioxidant to delay oxidation in processed foods.
Industrial Grade:
Used as an antioxidant and preservative in non-food industries.
Applied in feed additives, cosmetics, and technical processes requiring Vitamin C stabilization.
4. Packaging
Food Grade: 25 kg net weight, packed in fiber drums or multi-layer kraft paper bags with inner polyethylene liner.
Industrial Grade: 25 kg woven bags with plastic inner liner (or customized packaging upon request).
5. Storage & Shelf Life
Store in a cool, dry, and well-ventilated place, away from direct sunlight, moisture, and heat sources.
Keep container tightly closed.
Shelf life: 24 months from production date in original unopened packaging.
6. Safety Information
Non-toxic, Generally Recognized As Safe (GRAS) when used in food-grade applications.
Avoid inhalation of dust and contact with eyes.
Handle with standard industrial protective measures.
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