CN

L-Leucine

Molecular Formula: C6H13NO2 

Molecular Weight: 131.17 

CAS No: 61-90-5

L-LeucineCP2020EP11USP2023USP24AJI92
Assay≥98.5%98.5-101.0%98.5-101.5%98.5-101.5%99.0-100.5%
PH5.5-6.5/5.5-7.05.5-7.05.5-6.5
Lecithin/////
Binder content/////
Specific rotation[a]D20+14.9°-+16.0°+14.5°-+16.5°//+14.9°-+16.0°
Specific rotation[a]D25//+14.9°-+17.3°+14.9°-+17.3°/
Transmittance(T430)≥98.0%///≥98.0%
Appearance of solution/clear & colorless ≤BY6///
Bulk Density/////
Tapped Density/////
Chloride(Cl)≤0.02%≤0.02%≤0.05%≤0.05%≤0.02%
Ammonium(NH4)≤0.02%≤0.02%//≤0.02%
Sulfate(SO4)≤0.02%≤0.03%≤0.03%≤0.03%≤0.02%
Iron(Fe)≤10PPM≤10PPM≤30PPM≤30PPM≤10PPM
Heavy metals(Pb)≤10PPM//≤15PPM≤10PPM
Arsenic≤1PPM//≤1.5PPM≤1PPM
Lead/////
Cadmium/////
Mercury/////
Other amino acids≤0.5%/Individual impurities≤0.5%
Total impurities≤2.0%
/conforms
Ninhydrin-positive substances/Impurity A at 570 nm≤0.8%
Each impruity ≤0.2%
Total ≤1.0%
///
Particle Size Range/////
Loss on drying≤0.20%≤0.50%≤0.2%≤0.2%≤0.20%
Residue on ignition≤0.10%≤0.10%≤0.4%≤0.4%≤0.10%
Organic volatile impurities///conforms/
Total plate count≤ 1000 CFU/g≤ 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≤ 100 CFU/g




L-LeucineHigh PurityInstantGranulation
Assay≥98.5%≥95.0%≥95%
PH///
Lecithin/0.5~1.0%/
Binder content//≤5%
Specific rotation[a]D20+14.9°-+16.0°//
Specific rotation[a]D25///
Transmittance(T430)≥98.0%≥98.0%/
Appearance of solution///
Bulk Density/≥0.25g/ml≥0.50g/ml
Tapped Density/≥0.30g/ml≥0.55g/ml
Chloride(Cl)≤0.01%//
Ammonium(NH4)///
Sulfate(SO4)≤0.02%//
Iron(Fe)///
Heavy metals(Pb)/≤10ppm≤10ppm
Arsenic/≤1ppm≤1ppm
Lead/≤3ppm≤3ppm
Cadmium/≤1ppm≤1ppm
Mercury/≤0.3ppm≤0.1ppm
Other amino acidsIndividual impurities≤0.2%
Total impurities≤1.0%
//
Ninhydrin-positive substances///
Particle Size Range/≥95% through 80 mesh≥90% through 20 mesh
≤30% through 80 mesh
Loss on drying≤0.20%≤1.0%≤2.0%
Residue on ignition/≤0.50%≤0.4%
Organic volatile impurities///
Total plate count≤ 1000 CFU/g≤ 1000 CFU/g≤ 1000 CFU/g
Moulds & Yeasts≤ 100 CFU/g≤ 100 CFU/g≤ 100 CFU/g