Ascorbic acid VK

Ascorbic acid VC is white crystals or crystalline powder, odorless, sour, gradually turning yellow after a long time. It is easily soluble in water, acidic, slightly soluble in ethanol, insoluble in chloroform or ether. Widely used in food processing, medicine, industry, cosmetics, health products and other fields.

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Description

1.Detailed description

100 vitamin c powder herbal cosmetic grade the ordinary ascorbic acid japan (1).jpg

CAS Number:50-81-7

Other names: Ascorbic acid VK

MF: C6H8O6

EINECS No.:200-066-2

Place of origin: China (mainland)

Class standard: Cosmetic grade, Feed grade, Food grade, Medical grade

Application: Pharmaceuticals for animals

Brand name: TNN

Model number: pp usp ep

Purity: 99 percent min.

2. Certificate of Authenticity

Thing	Standard
view	White or almost white crystalline powder or colorless crystals
Melting temperature	About 190degree. with decomposition
Infrared absorption spectrum	The infrared absorption spectrum corresponds to the reference CRS spectrum of ascorbic acid.
PH (with 5-percent aqueous solution)	2.1-2.6
PH (with 2-percent aqueous solution)	2.4-2.8
Appearance of the solution	Clarity; Purely; color:Less or equalBY₇
Specific optical rotation	20.5degree -21.5degree
Damage due to drying out	Less or equal0.4 percent
Impurity E	Less or equal0.2 percent
Related substance	Impurity C:Less or equal0,15%
	Impurity D:Less or equal0,15%
	Unidentified impurities:Less or equal0.10 percent
	Total impurities:Less or equal0.20 percent
Copper	Less or equal5.0ppm
Iron	Less or equal2.0ppm
Arisensky	Less or equal3.0ppm
News	Less or equal2.0ppm
Mercury	Less or equal1.0ppm
Cadmium	Less or equal1.0ppm
Heavy metals	Less or equal10 ppm
Sulfated ash	Less or equal0.1 percent
analysis	99.0 percent ~ 100.5 percent