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L-Asparagine

Product Name: L-Asparagine
Molecular Formula: C4H8N2O3•H2O
Molecular Weight: 150.13
CAS No: 5794-13-8

Product Specifications


L- Asparagine AJI92 FCC5 USP39 EP8
Assay 99.0-101.0% 98.0-101.5% 98.0-101.5% 99.0-101.0%
PH 4.4-6.4 / / 4.0-6.0
Specific rotation[a]D20 +34.2°-+36.5° +33.0°-+36.5° +33.0°-+36.5° +33.7-+36.0
Specific rotation[a]D25 / / / /
Transmittance(T430) ≥98.0% / / /
Chloride(Cl) ≤0.02% / / ≤0.02%
Ammonium(NH4) ≤0.1% / / ≤0.01%
Sulfate(SO4) ≤0.02% / / ≤0.02%
Iron(Fe) ≤10PPM / / ≤10PPM
Heavy metals(Pb) ≤10PPM ≤5PPM ≤5PPM ≤10PPM
Arsenic ≤1PPM / / /
Other amino acids conform / individual impurities≤0.5% total impurities≤1.0% ≤0.5%
Ninhydrin-positive substances / / / /
Loss on drying 11.5-12.5% 11.5-12.5% 11.5-12.5% 10.5-12.5%
Residue on ignition ≤0.10% ≤0.10% ≤0.10% ≤0.10%


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