

| 化學(xué)名稱(chēng): | L-胱氨酸 | 
| INCI名稱(chēng): | 胱氨酸 | 
| 英文名稱(chēng): | CYSTINE | 
| CAS號: | 56-89-3 | 
| HS編碼 | 2930901000 | 
| 化學(xué)式: | C6H12N2O4S2 | 
| 分子量: | 240.30 | 
| 中文別名: | (R,R)-3,3'-二硫雙(2-氨基丙酸); 雙硫代氨基丙酸; L-膀胱氨基酸; L-胱; L-(-)-胱氨酸; 3-二硫代雙(2-氨基丙酸); L-3,3'-二硫代雙(2-氨基丙酸) | 
| 英文別名: | L-cystine; L-Cystine; 1-cystine; L-CYSTINE; l-cystin; h-(cys); (H-Cys-OH)2; (R,R)-3,3'-Dithiobis(2-aminopropionicacid); Cystin; [3H]-Cystine; (CYS)2; .β.,.β.'-Diamino-.β.,.β.'-dicarboxydiethyl disulfide; (R,R)-cystine; Nephrin; Dicysteine; L-CYTISINE | 
| 指 標 Specification | 標 準 Standard | 
| 外觀(guān) Appearance | 白色或類(lèi)白色結晶性粉末White or almost white crystalline powder | 
| 溶液外觀(guān) Appearance of the Solution | 透明無(wú)色至淺黃色Transparent colorless to light yellow | 
| pH值 pH value | 5.0~6.5 | 
| 比旋度 Specification Rotation | ?215°~+?225° | 
| 干燥失重 Loss on Drying | ≤0.2% | 
| 灼燒殘渣 Residue on Ignition | ≤0.1% | 
| 氯化物Chloride | ≤200ppm | 
| 硫酸鹽sulfate | ≤200ppm | 
| 重金屬(鉛) Heavy metal(Lead) | ≤10 ppm | 
| 鐵鹽 Ironic Salt | ≤10 ppm | 
| 透光率Light transmittance | ≥98.0%(430nm) | 
| 含量 Assay(drying basis) | 98.5~101.5% | 
| 微生物檢測 Microbial Test | |
| 總菌數 Total Aerobic | ≤1000cfu/g | 
| 霉菌和酵母 Yeast & Mold | ≤100cfu/g | 
| 大腸桿菌 E.coli | Negative | 
| 沙門(mén)氏菌 Salmonella | Negative | 
| Package: In 25Kg net per fiber drum, inner polythene bags. We can provide the packing as per your request. | |