CN
You Are Currently Here! > Home > Products & Quality > All Amino Acids > L-Alanine

L-Alanine

Molecular Formula: C3H7NO2

Molecular Weight: 89.09

CAS No: 56-41-7

L-AlanineCP2020EP11EP8USP2023
Assay≥98.5%98.5~101.0 %98.5~101.0 %98.5-101.5%
PH5.5-7.0//5.5-7.0
Specific rotation[a]D20+14.0°-+15.0°+13.5°-+15.5°+13.5°-+15.5°+13.7°-+15.1°
Specific rotation[a]D25////
Transmittance(T430)≥98.0%///
Appearance of solution/clear & colorless ≤BY6//
Chloride(Cl)≤0.02%≤0.02%≤0.02%≤0.05%
Ammonium(NH4)≤0.02%≤0.02%≤0.02%/
Sulfate(SO4)≤0.02%≤0.03%≤0.03%≤0.03%
Iron(Fe)≤10PPM≤10PPM≤10PPM≤30PPM
Heavy metals(Pb)≤10PPM/≤10PPM/
Arsenic≤1PPM///
Other amino acids≤0.5%//Maleic acid ≤ 0.05%
Malic acid ≤ 0.05%
Fumaric acid ≤ 0.05%
Any unspecified impurity ≤ 0.05%
Total impurities≤ 0.20%
Ninhydrin-positive substances/Each impurity≤ 0.1 %
Total impurities≤ 0.5 %
//
Loss on drying≤0.20%≤0.50%≤0.50%≤0.20%
Residue on ignition≤0.10%≤0.10%≤0.10%≤0.15%
Endotoxin< 20 EU/g< 20 EU/g/< 20 EU/g
Total plate count≤ 1000 CFU/g≤ 1000 CFU/g≤ 1000 CFU/g≤ 1000 CFU/g
Moulds & Yeasts≤ 100 CFU/g≤ 100 CFU/g≤ 100 CFU/g≤ 100 CFU/g


L-AlanineUSP32AJI92
Assay98.5-101.5%99.0-101.0%
PH5.5-7.05.7-6.7
Specific rotation[a]D20+13.7°-+15.1°+14.3°-+15.2°
Specific rotation[a]D25//
Transmittance(T430)/≥98.0%
Appearance of solution//
Chloride(Cl)≤0.05%≤0.02%
Ammonium(NH4)/≤0.02%
Sulfate(SO4)≤0.03%≤0.02%
Iron(Fe)≤30PPM≤10PPM
Heavy metals(Pb)≤15PPM≤10PPM
Arsenic/≤1PPM
Other amino acids

Individual impurities≤0.5%

Total impurities≤2.0%

conform
Ninhydrin-positive substances//
Loss on drying≤0.20%≤0.20%
Residue on ignition≤0.15%≤0.10%
Endotoxin//
Total plate count≤ 1000 CFU/g≤ 1000 CFU/g
Moulds & Yeasts≤ 100 CFU/g≤ 100 CFU/g