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 Products
L-Tyrosine
| Test Items |
Standard |
| Description |
white crystals or crystalline powder |
| Identification |
infrared absorption spectrum |
| Specific rotation [α]D20 |
-11.3° to -12.1° |
Sate of solution
(Transmittance) |
clear and colorless
not less than 95.0% |
| Chloride(CI) |
not more than 0.020% |
| Ammonium(NH4) |
not more than 0.02% |
| Sulfate (SO4) |
not more than 0.020% |
| Iron(Fe) |
not more than 10ppm |
| Heavy metals (Pb) |
not more than 10ppm |
| Arsenic (As2O3) |
not more than 1ppm |
| Other amino acids |
conforms |
| Loss on drying |
not more than 0.20% |
Residue on ignition
(sulfated) |
not more than 0.10% |
| Assay |
99.0 to 100.5% |
| Pyrogen |
Nonpyrogenic |
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