|
Items |
Specification |
|
Appearance: |
White or almost white crystalline powder. |
|
Identification: |
Confirms to requirements of method A and B |
|
Melting point: |
143 to 146 celsius degree |
|
Solubility: |
Freely soluble in water and chloroform, Slightly soluble in ether. |
|
Ordinary impurities: |
Not more than 0.10% |
|
Organic volatile impurities
2-proparol: |
Not more than 5000ppm |
|
Selenide: |
Not more than 0.003% (30ppm) |
|
pH value: |
5.0 to 7.0 |
|
Loss on drying: |
Not more than 0.50% |
|
Residue on ignition: |
Not more than 0.10% |
|
Heavy metals: |
Not more than 10ppm |
|
Assay: |
98.0 -101.0% |
|
Particle size: |
100% pass through 80mesh sieve |
