DL-蛋氨酸
分子量:149.21
CAS號:59-51-8
DL-蛋氨酸 |
EP4 |
AJI92 |
USP26 |
性狀 |
應為白色結晶性粉末 |
應為白色結晶或結晶性粉末 |
應為白色結晶性粉末 |
鑒別 |
符合要求 |
應符合規定 |
--- |
含量 |
99.0%~101.0% |
99.0%~100.5% |
98.5%~101.5% |
pH |
5.4~6.1 |
5.6~6.1 |
5.6~6.1 |
透光率 |
--- |
≥98.0% |
--- |
干燥失重 |
≤0.5% |
≤0.30% |
≤0.4% |
熾灼殘渣 |
≤0.1% |
≤0.10% |
≤0.5% |
氯化物 |
≤0.02% |
≤0.020% |
≤0.02% |
重金屬 |
≤10ppm |
≤10ppm |
≤15ppm |
鐵鹽 |
--- |
≤10ppm |
≤30ppm |
硫酸鹽 |
≤0.02% |
≤0.020% |
≤0.03% |
鉛 |
--- |
--- |
--- |
砷鹽 |
≤1ppm |
≤1ppm |
--- |
銨鹽 |
≤0.02% |
≤0.02% |
--- |
其他氨基酸 |
--- |
未測出 |
應符合規定 |
熱源 |
--- |
應符合規定 |
--- |
溶液的澄清度 |
清澈 無色 |
--- |
--- |
其它相關物質 |
符合要求 |
--- |
--- |
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