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L-Asparagine Monohydrate

Molecular Formula: C4H8N2O3•H2O

Molecular Weight: 150.13

CAS No： 5794-13-8

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L- AsparagineCP2020EP11USP2022USP39AJI92FCC11
Assay≥98.0%99.0～101.0%98.0-101.5%98.0-101.5%99.0-101.0%98.0-101.5%
PH/4.0-6.0//4.4-6.4/
Specific rotation[a]D20+31.0°-+35.0°+33.7-+36.0+33.0°-+36.5°+33.0°-+36.5°+34.2°-+36.5°+33.0°-+36.5°
Specific rotation[a]D25//////
Appearance of solution/clear & colorless////
Transmittance(T430)≥98.0%///≥98.0%/
Lead
/≤5PPM///
Chloride(Cl)≤0.005%≤0.02%//≤0.02%/
Ammonium(NH4)≤0.1%≤0.1%//≤0.1%/
Sulfate(SO4)≤0.005%≤0.02%//≤0.02%/
Iron(Fe)≤0.001%≤10PPM//≤10PPM/
Heavy metals(Pb)≤0.001%//≤5PPM≤10PPM≤5PPM
Arsenic≤0.0001%///≤1PPM/
Other amino acids≤0.5%Impurity A ≤ 0.5%
Impurity C ≤ 0.1%
Each impurity ≤ 0.05%
Total impurity≤ 0.8%		Total impurities≤ 1.0%Individual impurities≤0.5%
Total impurities≤1.0%		conform/
Ninhydrin-positive substances//////
Loss on drying11.5%～12.5%10.5-12.5%11.5-12.5%11.5-12.5%11.5-12.5%11.5-12.5%
Residue on ignition≤0.10%≤0.10%≤0.10%≤0.10%≤0.10%≤0.10%
Endotoxin＜ 25 EU/g＜ 25 EU/g＜ 25 EU/g///
Total plate count≤ 1000 CFU/g≤ 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≤ 100 CFU/g