Guangzhou ZIO Vitamin C bulk Ascorbic acid for sale
Product Description
Item |
Standard |
Appearance |
White crystalline powder |
Identification |
Positive |
Clarity of solution |
Clear |
Assay (%) |
99.0~100.5 |
Loss on drying (%) |
≤ 0.40 |
Residue on ignition (%) |
≤ 0.10 |
Sulphate ash |
≤ 0.10
|
Specific rotation |
from +20.5 to +21.5 |
PH value (2% solution) |
2.4 ~ 2.8 |
PH value (5% solution) |
2.1 ~ 2.6 |
Heavy metals |
≤3 ppm |
Iron |
≤2 ppm |
Copper |
≤2 ppm |
Total plate count |
≤1000 cfu/g |
Arsenic |
≤1 ppm |
Mercury |
≤1 ppm |
Organic volatile impurities |
Meets the requirements |
Chloride (Cl) (%) |
≤ 0.30 |
Melting point ( ℃) |
about 190 |
Cadmium |
≤1 ppm |
Lead |
≤2 ppm |
Storage |
in the shade |
Packing |
25kg/bag |



