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产品呈丝光细针状结晶或结晶性粉末。Melting_point≥300℃。342～344℃分解。熔点:290℃
相对密度:1.34
溶解性:0.45 g/L (25℃)
鉴定 用红外线吸收光谱仪器测定
比旋光度 -11.3°- -12.1° -9.8°- -11.2° -11.3°- -12.1° -11.3°- -12.3°
溶解状况 ≥95.0% ≥95.0%
含氯量 ≤0.020% ≤0.04% ≤0.02%
铵盐 (NH4) ≤0.02% ≤0.02%
硫酸盐 (SO4) ≤0.020% ≤0.04% ≤0.02%
铁盐 (Fe) ≤10PPm ≤30PPm ≤10PPm
重金属 (Pb) ≤10PPm ≤15PPm ≤10PPm ≤30PPm
铅 --- --- --- ≤10PPm
砷盐 (As2O3) ≤1PPm --- ≤1PPm ≤1.5PPm
其它氨基酸 符合标准 --- ≤0.4% ---
干燥失重 ≤0.20% ≤0.3% ≤0.2% ≤0.3%
灼烧残渣 (sulfated)≤0.10% ≤0.4% ≤0.1% ≤0.1%
含量 99.0-100.5% 98.5-101.5% ≥98.5% 98.5-101.5%
酸碱度 5.0-6.5 --- 5.0-6.5 ---
挥发物 --- 符合标准