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重要规格表
CAS号 EC号 Hill配方 摩尔质量 级别值 7048-04-6 200-157-7 C₃H₈ClNO₂S * H₂O 175.64 g/mol Ph Eur,USP 描述 产品目录编号 102735 同义词 Cys, L-Cysteinium Chloride Monohydrate, L-Cysteine Hydrochloride, Monohydrate 产品信息 CAS号 7048-04-6 EC号 200-157-7 级别 Ph Eur,USP Hill配方 C₃H₈ClNO₂S * H₂O Molar Mass 175.64 g/mol HS代码 2930 90 16 结构配方图像 理化信息 熔点 168 - 170 °C pH值 0.8 - 1.2 (100 g/l, H₂O, 20 °C) 容积密度 780 kg/m³ 溶解度 650 g/l (20 °C) GHS安全信息 RTECS HA2285000 储存类别 10 - 13 其它液体及固体 WGK WGK 1 轻度的水危害 一次性 3
反应性相对较低的有机物必须被收集在第A类, 如果被卤化则在第B类, 如果为固体残留物则归在第C类.规格 规格 Assay (iodometric, calc. on dried substance) 98.5 - 101.0 % Identity (IR-spectrum) passes test Identity (Chloride) passes test Appearance white to almost white crystalline powder or colorless crystals Appearance of solution (25 g/l, water) clear and not more intense in color than reference solution BY₆ Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 250 g/l, calc. on dried substance) +5.5 to +7.0 Spec. rotation (α 25/D, 80 g/l, hydrochloric acid 6 mol/l, calc. on dried substance) +5.7 to +6.8 Sulphate (SO₄) ≤ 300 ppm Heavy metals (as Pb) ≤ 10 ppm Fe (Iron) ≤ 20 ppm Related Compounds, total (TLC) ≤ 0.5 % Ninhydrin-positive substances (LC) (impurity A (570 nm)) ≤ 0.5 % Ninhydrin-positive substances (LC) (any ninhydrin-positive impurity) ≤ 0.2 % Ninhydrin-positive substances (LC) (ammonium (570 nm)) ≤ 0.02 % Ninhydrin-positive substances (LC) (total impurities) ≤ 1.0 % Residual solvents (ICH Q3C) excluded by manufacturing proces Sulfated ash (600 °C) ≤ 0.1 % Loss on drying (Vacuum < 0.7 kPa, P₂O₅, 24 h) 8.0 - 12.0 % Bacterial endotoxins ≤ 6.0 I.U./g Residues of metal catalysts or metal reagents acc. to EMEA/CHMP/SWP/4446/2000
are not likely to be present.Corresponds to Ph. Eur., USP.
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