产品名称:
63-68-3
L-Methionine
Met
产品介绍:
产品说明
一般描述
for biochemistry
应用
L-Methionine for biochemistry. CAS 63-68-3, pH 5 - 7 (10 g/l, H₂O, 20 °C).
分析说明
Assay (perchloric acid titration, calculated on dried substance) | ≥ 99.0 % |
Identity (IR-spectrum) | passes test |
Appearance | white or almost white, crystalline powder or colorless crystals |
Appearance of solution (0.5 mol/l, hydrochloric acid 1 mol/l) | clear and colorless |
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance) | +22.5 to +23.5 |
UV-Absorption (260 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l) | ≤ 0.50 |
UV-Absorption (280 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l) | ≤ 0.20 |
Chloride (Cl) | ≤ 0.02 % |
Sulfate (SO₄) | ≤ 0.01 % |
Heavy metals (as Pb) | ≤ 0.001 % |
As (Arsenic) | ≤ 0.0005 % |
Ca (Calcium) | ≤ 0.001 % |
Co (Cobalt) | ≤ 0.0005 % |
Fe (Iron) | ≤ 0.0005 % |
K (Potassium) | ≤ 0.0005 % |
Mg (Magnesium) | ≤ 0.0005 % |
Na (Sodium) | ≤ 0.005 % |
NH₄ (Ammonium) | ≤ 0.01 % |
Zn (Zinc) | ≤ 0.0005 % |
Foreign amino acids | ≤ 0.3 % |
Other ninhydrine positive substances | ≤ 0.1 % |
Loss on drying (105 °C; 3 h) | ≤ 0.3 % |
基本信息
分子量 | 149.2 |
MDL编号 | MFCD00063097 |
EC索引号 | 200-562-9 |
产品性质
质量水平 | 100 |
形式 | solid |
效能 | 36000 mg/kg LD50, oral (Rat) |
pH值(酸碱度) | 5-7 (20 ℃, 10 g/L in H2O) |
mp | 280-282 ℃ |
溶解性 | 48 g/L |
密度 | 1.34 g/cm3 |
堆积密度 | 550 kg/m3 |
储存温度 | 2-30℃ |
InChI | 1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8) |
InChI key | FFEARJCKVFRZRR-UHFFFAOYSA-N |
安全信息
储存分类代码 | 11 - Combustible Solids |
WGK | WGK 1 |