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High quality Ascorbic Acid (Vitamin C ) CAS 50-81-7
High quality Ascorbic Acid (Vitamin C ) CAS:50-81-7Produced under GMP,ISO certificate
USP,AJI/FCC standard
Description
1) Specification: 99%, BP, USP2) CAS No.: 50-81-7
3) Molecular Weight:
4) Function:Vitamin C or Ascorbic acidis an esssential nutrient for humans and certain other animal species.Ascorbic acid is well known for its anti-oxidant activity.Besides, Ascorbic acid has been shown to reduce transition metals.
Certificate of Analysis
Test items | Specifications | Test results |
Characteristics | White or almost white crystalline powder | Complies |
Identification | Positive reaction | Positive |
Melting Point | About 190°C | 191°C |
pH | 2.1 ~ 2.6 | 2.3 |
Clarity of Solution | Clear | Clear |
Colour of Solution | ≤ BY7 | <BY7 |
Copper | ≤ 5ppm | <5ppm |
Heavy Metals | ≤ 10ppm | <10ppm |
Lead | ≤ 2ppm | <2ppm |
Iron | ≤ 2ppm | <2ppm |
Oxalic Acid | ≤ 0.2% | <0.2% |
Residue on Ignition | ≤ 0.1% | 0.05% |
Specific Optical Rotation | +20.5° ~ +21.5° | +21.1° |
Assay | 99.0% ~ 100.5% | 99.9% |
Organic Volatile Impurities | Meets the requirement. | Complies |
Residual Solvents | Methanol ≤ 3000ppm | <3000ppm |
Conclusion | Conform to BP2007/USP30 Standard. | |
Storage | Store in sealed containers at cool & dry place. Protect from light, moisture and pest infestation. | |
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High quality Ascorbic Acid (Vitamin C ) CAS 50-81-7