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L-Aspartic Acid

Molecular Formula: C4H7NO4

Molecular Weight: 133.10 

CAS No: 56-84-8

L-Aspartic AcidUSP32AJI92
Assay98.5~101.5%99.0-100.5%
PH/2.5-3.5
Specific rotation[a]D20+ 24°~ + 26°+24.8°-+25.8°
Specific rotation[a]D25//
Transmittance(T430)/≥98.0%
Chloride(Cl)≤ 0.02%≤0.02%
Ammonium(NH4)/≤0.02%
Sulfate(SO4)≤ 0.03%≤0.02%
Iron(Fe)≤ 0.001%≤10PPM
Heavy metals(Pb)≤ 0.001%≤10PPM
Arsenic/≤1PPM
Other amino acids/conform
Ninhydrin-positive substances//
Loss on drying≤ 0.5%≤0.20%
Residue on ignition≤ 0.1%≤0.10%
Total plate count≤ 1000 CFU/g≤ 1000 CFU/g
Moulds & Yeasts≤ 100 CFU/g≤ 100 CFU/g