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 产品导航
L-谷氨酸
| 检测项目 |
标准 |
性状 |
white crystals or crystalline powder |
鉴别 |
infrared absorption spectrum |
比旋光度 [α]D20 |
+31.5 to +32.5° |
溶液的透过率 |
clear and colorless not less
than 98.0% |
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 0.1% |
灼烧残渣 |
not more than 0.10% |
含量 |
99.0 to 100.5% |
PH |
3.0 to 3.5 |
热原 |
nonpyrogenic |
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