一般情報 |
製品名:L-システイン |
CAS番号 :52-90-3 |
EINECS NO: 200-158-2 |
分子式: C3H7NO2S |
分子量: 121.16 |
外観: twin monoclinic or orthogonal crystallization, melting point 178 ℃, (a) + 26.5 (mol/L HCL), imine tastes, in neutral or slightly alkaline solution easy oxidation by air into cystine, acidic environment is stable. |
溶解性:水に溶ける, エタノール, not soluble in ethanol, propanol, ethyl acetate, stupid, carbon disulfide, carbon tetrachloride. |
使用法: used in the treatment of skin conditions such as eczema, urticaria, そばかす, the series products are widely used in medicine, food and cosmetics industries. |
標準: AJI92 |
基本的な分析 | ||
分析項目 | 仕様 | 結果 |
アッセイ | 98.0%~101.0% | 98.5% |
官能的 | ||
外観 | 白い粉 | 準拠 |
におい | 特性 | 準拠 |
味 | 特性 | 準拠 |
体格的特徴 | ||
特定の旋光度[a]D 20+ | + 8.3°°- +9.5°° | +8.7°° |
State of solution (透過率) | ≥95.0% | 98.5% |
乾燥による損失 | ≤0.50% | 0.32% |
着火時の残留物 | ≤0.10% | 0.06% |
pH value | 4.5 ~ 5.5 | 4.8 |
ヘビーメタル | ||
ヘビーメタル(Pb) | ≤10PPM | 3PPM |
塩化 (Cl) | ≤0.04% | 0.030% |
砒素 (As2O3) | ≤1PPM | 0.1PPM |
鉄 (Fe) | ≤10PPM | 4PPM |
Ammonium (NH4) | ≤0.02% | 0.010% |
硫酸塩 (SO4) | ≤0.020% | 0.010% |
Other amino acids | Chromatographically | 資格あり |