Аскорбиновая кислота/Витамин С

Item

Specification

Appearance

White or almost White Crystalline Powder or colourless crystals

Melting Point

About 190℃, with decomposition

Specific optical rotation

+20.5°—+21.5°

PH (With 5% water solution)

2.1-2.6

PH (With 2% water solution)

2.4-2.8

Loss on Drying

≤0.4%

Assay

99.0%-100.5%

Heavy metals

≤10ppm

Clarity of solution

Clear

Color of solution

≤BY7

Impurity E

≤0.2%

Copper

≤5.0ppm

Iron

≤2.0ppm