L-半胱氨酸盐酸盐一水物 外观 白色结晶或白色粉末罪厂原核则宜状 鉴定 用红外线吸收光谱仪器测定 比旋光度 +5.5°- +7.0° +5.7°- +6.8° +5.5°- +7.0° 溶解状况 ≥ 98.0% --- ≥ 98.0% 含氯量 19.89 – 20.29% --- 19.8 – 20.8% 铵来自盐 (NH4) ≤ 0.02% --- --- 硫酸盐 (SO4) ≤ 0.020% ≤ 0.03% ≤ 0.02% 铁盐 (Fe) ≤ 10PPm ≤ 30PPm ≤ 10PPm 重金属 (Pb) ≤ 10PPm ≤ 15PPm ≤ 10PPm 砷盐 (As2O3) ≤ 1PPm --- ≤ 1PPm 其它氨基酸 --- --- ≤ 0.5% 干燥失重 8.5 - 12.0% 8.0 - 12.0% 8.0 - 12.0% 灼烧残渣 (sulfated) ≤ 0.10% ≤ 0.4% ≤ 0.1% 含量 99.0-100.5% 98.5-101.5% ≥ 98.5% 酸碱度 1.5 - 2.0 --- 1.5 - 2.0 有机挥发物 --- 符合标准 ---
