|
DL-色氨酸
|
|
[产品名称]
|
DL-色氨酸
|
|
|
[分子式]
|
C11H12N2O2
|
|
|
[外观]
|
White crystalline powder
|
|
 |
 |
|
含量
|
98.0％~101.0％
|
|
|
透光率
|
≥95.0％
|
|
|
氯化物(Cl)
|
≤0.02%
|
|
|
铵含量
|
≤0.02%
|
|
|
硫酸盐
|
≤0.02%
|
|
|
铁
|
≤30ppm
|
|
|
重金属(Pb)
|
≤10ppm
|
|
|
砷含量(As2O3)
|
≤2ppm
|
|
|
干燥失重
|
≤0.2％
|
|
|
灼烧残渣
|
≤0.1％
|
|
|
PH值
|
5.5~7.0
|
|
 |
