L-Alanine

半岛bd体育手机客户端 说明

一般描述

for biochemistry

应用

L-Alanine for biochemistry. CAS 56-41-7, pH 5.5 - 6.5 (100 g/l, H?O, 20 °C).

分析说明

Assay (perchloric acid titration, calculated on dried substance)99.0 - 101.0 %Identity (IR-spectrum)passes testIdentity (specific rotation)passes testAppearancewhite to almost white crystalline powder or colorless crystalsAppearance of solution (25 g/l, water)clear and not more intense in color than reference solution BY?Spec. rotation (α 20/D, 100?g/l, hydrochloric acid 250?g/l, calc. on dried substance)+13.5 to +15.5Chloride (Cl)≤ 200 ppmSulfate (SO?)≤ 100 ppmAs (Arsenic)≤ 5 ppmCa (Calcium)≤ 50 ppmCo (Cobalt)≤ 5 ppmFe (Iron)≤ 5 ppmK (Potassium)≤ 5 ppmMg (Magnesium)≤ 5 ppmNa (Sodium)≤ 50 ppmPb (Lead)≤ 10 ppmZn (Zinc)≤ 5 ppmNinhydrin-positive substances (LC)(any ninhydrin-positive impurity)≤ 0.1 %Ninhydrin-positive substances (LC) (ammonium (570 nm))≤ 0.02 %Ninhydrin-positive substances (LC)(total impurities)≤ 0.5 %Loss on drying (105 °C; 3?h)
≤ 0.2 %≤ 0.2 %

基本信息

经验(实验)分子式	C3H7NO2
分子量	89.09
EC索引号	200-273-8

半岛bd体育手机客户端 性质

质量水平	100
形式	solid
pH值(酸碱度)	5.5-6.5 (20 ℃, 100 g/L in H2O)
mp	295-297 ℃ (decomposition)
溶解性	166.5 g/L
密度	1.40 g/cm3at 20 ℃
堆积密度	660 kg/m3
储存温度	2-30℃
InChI	1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)
InChI key	QNAYBMKLOCPYGJ-UHFFFAOYSA-N

安全信息

储存分类代码	11 - Combustible Solids
WGK	WGK 1