L-赖氨酸

Item

Specifications

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

红外吸收光谱法Infrared

Absorption

符合Qualified

含量Assay,

98.5%-101.5%

99.8%

透光率State of solution

≥98%%

98.4%

旋光Specific optical rotation［a］

+20.4^o  ~ +21.4^o

+21.0^o

氯离子 Chloride (as cl)

19.0%~19.6%

19.13%

硫酸根Sulfate(as  SO4)

≤0.03%

0.015%

铁盐 Iron (as Fe)

≤30 ppm

3ppm

重金属Heavy metals,% (as Pb)

≤15 ppm

3ppm

干燥失重Loss on drying

≤0.4%

0.28%

灼烧残渣Residue on ignition,

≤0.1%

0.06%