检测项目Item |
检测标准Specifications |
检测结果Results |
性状Description |
白色晶体或结晶性粉末White granular powder |
白色晶体状粉末White granular powder |
鉴别 Identification |
应符合要求 Meet the requirements |
符合要求Conforms |
含量Assay,% |
98.5%-101.5% |
99.5% |
旋光Specific optical rotation[a]D20
|
-29.4o ~ -32.8o
|
-31.9 o |
重金属Heavy metals,% (as Pb) |
≤0.0015% |
<0.0015% |
干燥失重Loss on drying, % |
≤0.30% |
0.13% |
砷盐Arsenic(AS2O3) |
≤1 ppm |
<1ppm |
灼烧残渣Residue on ignition, % |
≤0.1% |
0.05% |
氯化物Chloride, % (as Cl) |
≤0.05% |
<0.05% |
硫酸盐Sulfate(SO4),% (as SO4 )
|
≤0.03% |
<0.03% |
铁盐Iron(as Fe),% |
≤0.003% |
<0.003% |
有机挥发物 Organic volatile impurrities |
符合规定 Conforms |
符合规定 Conforms |
酸度PH |
5.5-7.0 |
5.8
|
L-色氨酸CAS号:73-22-3
L-色氨酸分子式: C11H12N2O2
L-色氨酸英文名称: L-Tryptophan
L-色氨酸英文同义词: H-Trp-OH; L-Tryptophane; L-Tryptohan,99%; 2,4,5,6-Tetrachloropyrimidine; TRP; (S)-2-Amino-3-(3-indolyl)propionic acid; 2-Amino-3-(1H-indol-3-yl)propanoic acid
L-色氨酸EINECS号: 200-795-6
L-色氨酸分子量: 204.2252
L-色氨酸熔点: 280-285℃
L-色氨酸沸点: 447.9°C at 760 mmHg
L-色氨酸密度: 8.3E-09mmHg at 25°C
L-色氨酸闪点: 224.7°C