Business Type:Trading Company
Product Certification&
Enterprise Certification
Country: China (Mainland)
Business Type:Trading Company
CAS NO.50-81-7
ITEMS |
SPECIFICATION |
|
Characteristics |
White or almost White crystals Crystalline Powder |
|
Identification |
Positive Reaction |
|
Melting Point |
About 190℃ |
|
PH(5% aqueous solution) |
2.1-2.6 |
|
Clarity Of Solution |
Clear |
|
Colour Of Solution |
≤BY7 |
|
Copper |
≤5ppm |
|
Heavy Metals |
≤10ppm |
|
Iron |
≤2ppm |
|
Mercury |
≤0.1ppm
|
|
Lead |
≤2 ppm
|
|
Arsenic |
≤3ppm |
|
Cadmium(Cd)
|
≤1 ppm
|
|
Related Substances
|
Impurity C
|
≤0.1%
|
|
Unspecified Impurities |
≤0.1% |
|
Total |
≤0.2% |
|
Disregard Limit |
≤0.05% |
Oxalic Acid |
≤0.2% |
|
Loss of Drying |
≤0.4% |
|
Sulphate Ash(Residue On Ignition) |
≤0.1% |
|
Specific Optical Rotation |
+20.5°–+21.5° |
|
Organic Volatile Impurities |
Pass |
|
Assay |
99.0%-100.5% |