Ascorbic Acid (Vitamin C)

Ascorbic acid (Vitamin C) 1.Manufacture:1992 2.SGS,ISO certification 3.OEM supplied, 4.Specification:99% Ascorbic Acid (Vitamin C)Molecular formula: C6H8O6 Weight: 176.14 Physicochemical Properties: This product is white crystals or crystalline powder, melting point 190 °C to 192 °C; odorless, Meisuan; long home color gradually Wei Huang. The materials in the water soluble, slightly dissolved in ethanol, ethyl ether or chloroform in insoluble. The goods 5% (W / V) solution pH 2.1 to 2.6, the goods 10% (W / V) solution Specific rotation is +20.5 +21.5. Quality Standards: Chinese Pharmacopoeia 2000 Version 2 item Test results Chinese pharmacopoeia 2000 Version Characteristic pass white crystalline powder Melting point 191.0 190-192 Specific rotation +20.5--+21.5 +21.0 Identificatiorpass pass Clarity&Colour of solution passA≤0.03 Residue on ignition 0.02% ≤0.1% Ferrite <2ppm ≤2ppm Copper <5ppm≤5ppm Heavy metals <3ppm ≤10ppm