Sell ascorbic acid @China (Mainland)

Ascorbic Acid 

Appearance

White Crystalline Powder

Identification

Positive Reaction

Clarity of Solution

Clear

Colour of Solution

≤BY7

Assay

99.5% ~100.5%

Specific Rotation

+20.5°~ +21.5°

Melting Point

190℃-192℃

PH

2.1-2.6

Loss on Drying

≤0.4%

Oxalate

≤0.2%

Sulfated Ash

≤0.1%

Heavy Metals

≤10ppm

Mercury

≤1ppm

Arsenic

≤3ppm

Copper

≤5ppm

Iron

≤2ppm

Lead

≤3ppm