DL-蛋氨酸
|
DL-蛋氨酸 |
AJI92 |
USP26 |
EP4 |
FCC V |
|
性状 |
应为白色结晶或结晶性粉末 |
应为白色结晶性粉末 |
应为白色结晶性粉末 |
应为白色结晶性粉末 |
|
鉴别 |
应符合规定 |
--- |
符合要求 |
符合要求 |
|
含量 |
99.0%~100.5% |
98.5%～101.5% |
99.0%～101.0% |
98.5%~101.5% |
|
pH |
5.6~6.1 |
5.6~6.1 |
5.4～6.1 |
5.6～6.1 |
|
透光率 |
≥98.0% |
--- |
--- |
--- |
|
干燥失重 |
≤0.30% |
≤0.4% |
≤0.5% |
≤0.5% |
|
炽灼残渣 |
≤0.10% |
≤0.5% |
≤0.1% |
≤0.1% |
|
氯化物 |
≤0.020% |
≤0.02% |
≤0.02% |
--- |
|
重金属 |
≤10ppm |
≤15ppm |
≤10ppm |
--- |
|
铁盐 |
≤10ppm |
≤30ppm |
--- |
--- |
|
硫酸盐 |
≤0.020% |
≤0.03% |
≤0.02% |
--- |
|
铅 |
--- |
--- |
--- |
≤5ppm |
|
砷盐 |
≤1ppm |
--- |
≤1ppm |
--- |
|
铵盐 |
≤0.02% |
--- |
≤0.02% |
--- |
|
其他氨基酸 |
未测出 |
应符合规定 |
--- |
--- |
|
热源 |
应符合规定 |
--- |
--- |
--- |
|
溶液的澄清度 |
--- |
--- |
清澈 无色 |
--- |
|
其它相关物质 |
--- |
--- |
符合要求 |
--- |
|
目数 |
--- |
--- |
≥95%--＜50um- ≥1.0%≥100um |
--- |
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