Commodity Name：Ascorbic Acid (Vitamin C)
CAS Number：50-81-7
Molecular Formula：C6H8O6
Molecular Weight：176.12
Properties：white monoclinic system crystals or crystalline powder.
Metling point 190 . C -192 C, odorless but tastes sour. Color turns light yellow after long time storage. The product is easily soluble in water , slightly soluble in ethanol , insoluble in chloroform and ether and its water solution appears acidic. The PH value of the 5% water solution is 2.1-2.6 and the ratio rotation of the 10% (W/V) water solution is +20.5 . -+21.5 .
Melting point: about 190 DC pH: 2.1—2.6 Clarity of solution: clear Color of solution:BY7 max Copper: 5ppm max Heavy metals: 10ppm max Lead: 2ppm max Iron: 2ppm max Oxalic aicd: 0.2%max Sulphate ash(residue on ignition): 0.1%max Specific optical rotation: +20.5°～+21.5°
Assay: 99.0%～100.5%
Organic volatile impurities: pass
Residual solvents: methanol NMT 3000ppm
Uses
It applies mainly to production of various medicines as clinically important material for supplementary cure practice in different sectors. Being food additives, it acts as superior and reliable agent in nutrition, antiseptic and flour processing aspects. It also helps enhance the immune system of animals as being served in feed additives.
CAS Number：50-81-7
Molecular Formula：C6H8O6
Molecular Weight：176.12
Properties：white monoclinic system crystals or crystalline powder.
Metling point 190 . C -192 C, odorless but tastes sour. Color turns light yellow after long time storage. The product is easily soluble in water , slightly soluble in ethanol , insoluble in chloroform and ether and its water solution appears acidic. The PH value of the 5% water solution is 2.1-2.6 and the ratio rotation of the 10% (W/V) water solution is +20.5 . -+21.5 .
Specification
Appearance: White or almost white crystalline powder
Identification: Positive reaction Appearance: White or almost white crystalline powder
Melting point: about 190 DC pH: 2.1—2.6 Clarity of solution: clear Color of solution:BY7 max Copper: 5ppm max Heavy metals: 10ppm max Lead: 2ppm max Iron: 2ppm max Oxalic aicd: 0.2%max Sulphate ash(residue on ignition): 0.1%max Specific optical rotation: +20.5°～+21.5°
Assay: 99.0%～100.5%
Organic volatile impurities: pass
Residual solvents: methanol NMT 3000ppm
Uses
It applies mainly to production of various medicines as clinically important material for supplementary cure practice in different sectors. Being food additives, it acts as superior and reliable agent in nutrition, antiseptic and flour processing aspects. It also helps enhance the immune system of animals as being served in feed additives.