化學(xué)名稱(chēng): | S-羧甲基-L-半胱氨基 |
INCI名稱(chēng): | 羧甲司坦 |
英文名稱(chēng): | S-CARBOXYMETHYL-L-CYSTEINE |
CAS號(hào): | 638-23-3 |
HS編碼 | 2930909099 |
化學(xué)式: | C5H9NO4S |
分子量: | 179.19 |
中文別名: | 3-羧甲基硫代-L-丙氨酸; 羧甲基半胱氨酸; S-羧甲基-L-半胱氨酸; S-羥甲基-L-半胱氨酸; S-(羧甲基)-L-半胱氨酸; 3-[(羧甲基)硫代]丙氨酸 羧甲司坦 |
英文別名: | S-carboxymethyl-L-cysteine; Carbocistein; S-Carboxymethyl-L-cysteine CARBOCYSTEINE |
指 標(biāo) Specification | 標(biāo) 準(zhǔn) Standard |
外觀(guān) Appearance | 白色或類(lèi)白色結(jié)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 | 2.8~3.0 |
比旋度 Specification Rotation | -32.5°~-36.0° |
干燥失重 Loss on Drying | ≤0.5% |
灼燒殘?jiān)?/span> Residue on Ignition | ≤0.2% |
氯化物Chloride | ≤0.15% |
硫酸鹽sulfate | ≤0.03% |
重金屬(鉛) Heavy metal(Lead) | ≤20 ppm |
鐵鹽 Ironic Salt | ≤10 ppm |
半胱氨酸 Cysteine | ≤0.05% |
透光率Light transmittance | ≥95.0%(430nm) |
含量 Assay(drying basis) | 98.5~101.0% |
微生物檢測(cè) Microbial Test | |
總菌數(shù) 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. |