Vitamin C / Ascorbic Acid / Vitamin C

English name: VC; Ascorbic acid; L (+)-Ascorbic acid; L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone
Other names: Ascorbic acid; Vitamin C; L-ascorbic acid; Vitamin C; 2,3,4,5,6-pentahydroxy-2-hexenoic acid-4-lactone
CAS number: 50-81-7
C6H8O6 = 176.12
Level: USP Grade
Content: ≥99.0%
Identification: qualified specific rotation: + 20.5 ～ 21.5 °

PH: 2.1 ～ 2.6

Heavy metals: ≤10ppm

Iron: ≤2ppm

Lead: ≤2ppm

Melting point: about 190 ℃
Properties: white crystal, odorless, with citric acid-like acidity. Stable in dry air, impure and many natural products can be oxidized by air and light, and its aqueous solution quickly oxidizes to dehydroascorbic acid. Alkali, iron and copper can accelerate the reaction. It can form a stable metal salt, which is a relatively strong reducing agent, and the color becomes darker after storage for a long time, and it becomes light yellow in different degrees. 1G is soluble in about 3ml of water, 30ml of ethanol, and 50ml of absolute ethanol. sodium hexametaphosphate Use: Biochemical research. Standard reagents for the determination of arsenic, iron, boric Acid Flakes,phosphorus and iodine. Chromatographic analysis reagents. Food antioxidants. Masking agent. reducing agent. Determination of bismuth, calcium, magnesium, titanium, molybdenum, tungsten and antimony. Epinephrine determination and storage: RT, avoid light, avoid contact with metal