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 产品导航
L-酪氨酸
| 检测项目 |
标准 |
| 性状 |
white crystals or crystalline powder |
| 鉴别 |
infrared absorption spectrum |
| 比旋光度 [α]D20 |
-11.3° to -12.1° |
Sate of solution
(Transmittance) |
clear and colorless
not less than 95.0% |
| 氯化物 |
not more than 0.020% |
| 铵盐(NH4) |
not more than 0.02% |
| 硫酸盐 (SO4) |
not more than 0.020% |
| 铁盐(Fe) |
not more than 10ppm |
| 重金属 (Pb) |
not more than 10ppm |
| 砷盐 (As2O3) |
not more than 1ppm |
| 其它氨基酸 |
conforms |
| 干燥失重 |
not more than 0.20% |
| 灼烧残渣 |
not more than 0.10% |
| 含量 |
99.0 to 100.5% |
| 热原 |
nonpyrogenic |
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