L-Ascorbic acid Vitamin C CAS50-81-7

Name:  L-Ascorbic acid,Vitamin C
CAS No.:  50-81-7
Appearance: White or almost white crystals or crystalline powder
Molecular formula: C6H8O6
Molecular Weight:   176.12
food grade,feed grade and Pharm grade Vitamin C models include: powder

Product origin:
China
Lead Time:
2 weeks

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product introduction

Description:

Vitamin C (also known as ascorbic acid) is closely related to human health, is an important and special water-soluble vitamin, with the simplest molecular structure, the most unstable physical and chemical properties, the largest daily human needs, the most concentrated dietary distribution and other special properties, in maintaining the normal function of the human body has a variety of important roles.

Application：

Under normal circumstances, the role of vitamin C is to prevent anemia, improve the body's immunity, beauty spots and so on. The details are as follows:

1. Prevent anemia: Vitamin C can promote the absorption of iron, can not easily absorb the trivalent iron into bivalent iron, so that the stomach is easier to absorb, can effectively prevent the emergence of anemia.

2. Improve the body's immunity: under normal circumstances, eating vitamin C properly can supplement the vitamin C needed by the body, which is used to improve the body's immunity and reduce the diseases caused by lack of vitamin C.

3. Beauty spots: For people with dark skin or patches on the skin, supplementing vitamin C can play a better antioxidant effect, which can help the melanin on the skin fade, and can play the purpose of beauty spots.

Specification:

Items	Standards	Results
Identification	Positive Reaction	Qualified
Appearance	White or almost white crystals or crystalline powder	Qualified
Assay (C6 H8O6)	99.0% ~100.5%	99.8%
Specific optical rotation	+20.5。~+21.5。	+20.9°
PH (with 2% water solution )	2.4~2.8	2.6
PH (with 5% water solution)	2.1 ~2.6	2.4
Clarity of solution	Clear	Clear
Colour of solution	= BY7	<BY7
Residue on ignition	= 0.1%	0.05%
Melting point	190~192°C	191.0°C
Heavy metal	= 10.0 mg/kg	Conform
Iron	= 2.0 mg/kg	Conform
Copper	= 5.0 mg/kg	Conform
Lead	= 0.5 mg/kg	Conform
Arsenic	= 2.0 mg/kg	Conform
Mercury	= 1.0 mg/kg	Conform
Cadmium (Cd)	= 0.5 mg/kg	Conform
Impurity E	= 0.20%	Conform
Impurities C, D	= 0.15%	Conform
Unspecified impurities (each impurity )	= 0.10%	Conform
Sum of impurities other than C and D	= 0.20%	Conform
Residual Solvents (as methanol)	= 3000 mg/kg	Conform
Loss of Drying	= 0.4%	Conform
Total Plate Counts	= 1000 cfu/g	Conform
Yeasts and Moulds	= 100 cfu/g	Conform
Escherichia coli	Negative in 10g	Conform
Salmonella	Negative in 25g	Conform
Staphylococcus Aureus	Negative in 25g	Conform
Conclusion : Conform to the standard USP42.