Acid Ascorbic VWR

Xuất xứ: VWR Prolabo-Pháp

Quy cách: 250g/chai

Spection:

Assay 99.0 - 100.5 %

Colour of solution (50 g/l; water) BY7

Melting point 182 - 192 °C

Specific optical rotation (10 %; water) 20.5 - 21.5 °

Spec. optical rotation (25°C;10 %;water) 20.5 - 21.5 °

Heavy metals (as Pb) Max. 10 ppm

Ignition residue (SO4) Max. 0.05 %

Loss on drying (105°C) Max. 0.1 %

Cl (Chloride) Max. 20 ppm

SO4 (Sulphate) Max. 20 ppm

Ca (Calcium) Max. 50 ppm

Cu (Copper) Max. 10 ppm

Fe (Iron) Max. 2 ppm

Pb (Lead) Max. 10 ppm