L-苯丙氨酸
|
L-苯丙氨酸 |
AJI92 |
USP40 |
FCCVI |
|
性状 |
应为白色结晶或结晶性粉末 |
应为白色结晶或结晶性粉末 |
应为白色结晶或结晶性粉末 |
|
鉴别 |
应符合规定 |
应符合规定 |
红外图谱 |
|
含量 |
99.0%～100.5% |
98.5%~101.5% |
98.5%~101.5% |
|
pH |
5.4~6.0 |
5.5~7.0 |
5.4~6.0 |
|
透光率 |
≥98.0% |
--- |
--- |
|
干燥失重 |
≤0.20% |
≤0.3% |
≤0.2% |
|
炽灼残渣 |
≤0.10% |
≤0.4% |
≤0.1% |
|
氯化物 |
≤0.020% |
≤0.05% |
≤0.02% |
|
重金属 |
≤10ppm |
≤15ppm |
≤15ppm |
|
铅 |
--- |
--- |
≤5 ppm |
|
铁盐 |
≤10ppm |
≤30ppm |
--- |
|
硫酸盐 |
≤0.020% |
≤0.03% |
--- |
|
细菌内毒素 |
--- |
--- |
--- |
|
砷盐 |
≤1ppm |
--- |
≤2ppm |
|
铵盐 |
≤0.02% |
--- |
--- |
|
其他氨基酸 |
应符合规定s |
应符合规定 |
--- |
|
热源 |
应符合规定 |
--- |
--- |
|
比旋度 |
-33.5°~ -35.0° |
-32.7°~-34.7° |
-33.2°~ -35.2° |
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