PH9273 | L-抗坏血酸/维生素C, AR,99.5% L-Ascorbic acid CAS号：50-81-7

英文名称：VC；Ascorbic acid；L(+)-Ascorbic acid；L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone
其他名称：抗坏血酸；维他命C；L-抗坏血酸；丙种维生素；2,3,4,5,6-五羟基-2-己烯酸-4-内酯
CAS号：50-81-7
C6H8O6=176.12
级别：AR
含量：≥99.5%
比旋度：+20.5～21.5°
熔点：190～192℃
鉴别：合格
溶解澄清度：≤0.5号
重金属：≤0.001%
炽灼残渣：≤0.1%
铜：≤0.0005%
铁：≤0.0002%
溶液消光值（420mm）：≤0.03
性状：白色结晶，无气味，有柠檬酸样酸味。在干燥空气中稳定，不纯和许多天然产品，能被空气和光线氧化，其水溶液很快氧化成脱氢抗坏血酸。碱、铁和铜能使反应加速。能形成稳定的金属盐，为相对强的还原剂，贮存日久色变深，成不同程度的浅黄色。1G溶于约3ml水、30ml乙醇、50ml无水乙醇。
用途：生化研究。测定砷、铁、磷和碘的基准试剂。色谱分析试剂。 测定铋、钙、镁、钛、钼、钨和锑等。肾上腺素测定。
常温运输与保存，有效期3年


Vitamin C (also known as ascorbic acid and ascorbate) is a vitamin found in various foods and sold as a dietary supplement. It is used to prevent and treat scurvy. Vitamin C is an essential nutrient involved in the repair of tissue and the enzymatic production of certain neurotransmitters. It is required for the functioning of several enzymes and is important for immune system function. It also functions as an antioxidant.