L-Methionine

半岛bd体育手机客户端 说明

一般描述

for biochemistry

应用

L-Methionine for biochemistry. CAS 63-68-3, pH 5 - 7 (10 g/l, H?O, 20 °C).

分析说明

Assay (perchloric acid titration, calculated on dried substance)≥ 99.0 %Identity (IR-spectrum)passes testAppearancewhite or almost white, crystalline powder or colorless crystalsAppearance of solution (0.5?mol/l, hydrochloric acid 1?mol/l)clear and colorlessSpec. rotation (α 20/D, 50?g/l, hydrochloric acid 1 mol/l, calc. on dried substance)+22.5 to +23.5UV-Absorption (260?nm, 0.5?mol/l, 1?cm, hydrochloric acid 1?mol/l)≤ 0.50UV-Absorption (280?nm, 0.5?mol/l, 1?cm, hydrochloric acid 1?mol/l)≤ 0.20Chloride (Cl)≤ 0.02 %Sulfate (SO?)≤ 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 %NH? (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

半岛bd体育手机客户端 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