L-胱氨酸
包装: 25kg公斤牛皮纸袋或桶装
标准: AJI92， EP5
COA ( 3种规格)：
检验项目 Item | 参照标准Limit (EP5) |
特性Characters | 白色结晶性粉末，不溶于水和酒精，溶于稀释的可溶性无机盐。A white, crystalline powder, practically insoluble in water and in alcohol. It dissolves in dilute solutions of alkali hydroxides |
产品鉴定Identification | 符合conforms |
旋光Specific optical rotation | -218 to -224 |
茚三酮阳性物质Ninhydrin-positive substances | Meets the requirements |
氯化物Chloride | ≤200ppm |
硫酸盐Sulphate | ≤300ppm |
铵盐Ammonium | ≤200ppm |
铁盐Iron | ≤10ppm |
重金属Heavy metals(as Pb) | ≤10ppm |
干燥失重Loss on drying | ≤0.50% |
硫酸灰分Sulphated ash | ≤0.1% |
含量Assay | 98.5% ~ 101.0% |
检验项目Item | 参照标准AJI92 |
外观Appearance | 白色结晶或者结晶性粉末White Crystals Or Crystalline Powder |
旋光SPECIFIC ROTATION[Α]D20 | -215° To -225° |
透光率State Of Solution | ≥98% |
氯化物Chloride | ≤0. 02% |
硫酸盐Sulfate | ≤0. 02% |
铁盐Iron | ≤10ppm |
重金属Heavy Metals | ≤10ppm |
砷盐Arsenic | ≤1.0ppm |
其他氨基酸Other Amino Acids | 色谱分析未检出Chromatographically Not Detectable |
干燥失重Loss On Drying | ≤0.2% |
燃烧残渣Residue On Ignition | ≤0.10% |
含量Assay | 98.5~101.5% |
酸碱度Ph | 5.0~6.5 |
检验项目Item | 企业标准Limited (Enterprise Standard) |
外观Appearance | 白色结晶状粉末或者结晶White crystalline powder or crystals |
旋光Specific Rotation | -215~-225 |
透光率State Of Solution | ≥92% |
氯化物Chloride | ≤0.06% |
硫酸盐Sulfate | ≤0.02% |
铁盐Iron | ≤10ppm |
重金属Heavy Metals | ≤10ppm |
砷盐Arsenic | ≤1.0ppm |
其他氨基酸Other Amino Acids | 色谱分析未检出Chromatographically Not Detectable |
干燥失重Loss On Drying | ≤0.20% |
燃烧残渣Residue On Ignition | ≤0.10% |
含量Assay | 98.5~101.0% |
酸碱度Ph | 5.0~6.5 |