White powder, soluble in water, methanol, ethanol, ethyl acetate, slightly soluble in ether, and insoluble in benzene
Used as medicine and additives ,treatment of vestibular disorder,etc .
|
Item |
Specification |
Result |
|
Appearance |
A white crystals or crystalline powder |
Conforms |
|
Infrared spectrum |
Infrared absorption spectrum |
Conforms |
|
State of solution |
≥95.0% |
97.6% |
|
Chloride |
≤0.020% |
<0.020% |
|
Ammonium |
≤0.02% |
<0.02% |
|
Sulfate |
≤0.020% |
<0.020% |
|
Heavy metals (Pb) |
≤20ppm |
<20ppm |
|
Iron |
≤10ppm |
<10ppm |
|
Arsenic |
≤2ppm |
<2ppm |
|
Loss on drying |
≤0.5% |
0.30% |
|
Residue on ignition(sulfated) |
≤0.3% |
0.19% |
|
Other amino acids |
Not detectable by TCL |
Conforms |
|
Assay |
97.5~102.5% |
99.5% |
|
pH |
1.7~3.0 |
2.4 |
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