|
Items |
Specification |
|
Appearance: |
White crystalline powder |
|
Taste: |
Hard salty |
|
Odor: |
Characteristic |
|
Solubility(10% water solution/20 celsius degree): |
Clear |
|
Specific rotation(25celsius degree): |
+70 to +73 |
|
Transm.(20% water solution 450nm) |
Not less than 90% |
|
Residue on ignition: |
Not more than 0.1% |
|
Organic volatile impurities: |
Meet requirement |
|
Loss on drying: |
Not more than 0.5% |
|
pH value(2% , 25celsius degree) |
3.0-5.0 |
|
Chloride: |
16.2 -16.7% |
|
Bulk density: |
Not less than 0.75g/ml |
|
Iron: |
Not more than 10ppm |
|
Heavy metals: |
Not more than 10ppm |
|
Arsenic: |
Not more than 2ppm |
|
Lead: |
Not more than 0.5ppm |
|
Assay: |
98.5-102% |
|
Microbial:
Total bacterial count:
Yeast & moulds:
Escherichia coli:
Salmonella:
Staphylococcus aureus: |
Not more than 1000CFU/g
Not more than 100CFU/g
Negative
Negative
Negative |
|
Particle size |
100% pass 40mesh sieve |
