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L-Valine

Molecular Formula: C5H11NO2 

Molecular Weight: 117.15 

CAS No： 72-18-4

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L-ValineCP2020EP11USP2023AJI92FCC11
Assay≥98.5%98.5-101.0%98.5-101.5%99.0-100.5%98.5～101.5%
PH5.5-6.5/5.5-7.05.5-6.55.5～7
Specific rotation[a]D20+26.6°-+28.8°+26.5°-+29.0°/+27.6°-+29.0°+26.7° ～+29°
Specific rotation[a]D25//+26.6°-+28.8°/+26.6° ～+28.9°
Transmittance(T430)≥98.0%//≥98.0%/
Appearance of solution/clear & colorless ≤BY6///
Chloride(Cl)≤0.02%≤0.02%≤0.05%≤0.02%/
Ammonium(NH4)≤0.02%≤0.02%/≤0.02%/
Sulfate(SO4)≤0.03%≤0.03%≤0.03%≤0.02%/
Iron(Fe)≤10PPM≤10PPM≤30PPM≤10PPM/
Heavy metals(Pb)≤10PPM//≤10PPM/
Arsenic≤1PPM//≤1PPM/
Lead////≤ 5 ppm
Other amino acids≤0.5%/Individual impurities≤0.5%
Total impurities≤2.0%		conforms/
Ninhydrin-positive substances/Impurity B at 570 nm≤0.4%  
Each impurity ≤0.2%
Total ≤1.0%		///
Insoluble foreign matter////≤ 50 ppm
Loss on drying≤0.20%≤0.50%≤0.30%≤0.20%≤ 0.3%
Residue on ignition≤0.10%≤0.10%≤0.10%≤0.10%≤ 0.1%
Total plate count≤ 500 CFU/g≤ 500 CFU/g≤ 500 CFU/g≤ 500 CFU/g≤ 500 CFU/g
Moulds & Yeasts≤ 50 CFU/g≤ 50 CFU/g≤ 50 CFU/g≤ 50 CFU/g≤ 50 CFU/g
Pathogenic BacteriumCronobacter spp /Enterobacteriaceae /Salmonella /Bacillus cereus /Sulphite-reducing clostridia(SRC)
（Can be tested upon request）