L-Serine

L-Serine	CP2020	EP11	USP2023	AJI92
Assay	≥98.5%	98.5-101.0%	98.5-101.5%	99.0-101.0%
PH	5.5-6.5	/	/	5.2-6.2
Specific rotation[a]D20	+14.0°-+15.6°	+14.0°-+16.0°	/	+14.4°-+15.5°
Specific rotation[a]D25	/	/	+14.0°-+15.6°	/
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)	≤0.02%	≤0.03%	≤0.03%	≤0.02%
Iron(Fe)	≤10PPM	≤10PPM	≤30PPM	≤10PPM
Heavy metals(Pb)	≤10PPM	/	/	≤10PPM
Arsenic	≤1PPM	/	/	≤1PPM
Other amino acids	≤0.50%	/	Individual impurities≤0.5% Total impurities≤2.0%	conform
Ninhydrin-positive substances	/	Individual impurities≤0.20% Total impurities≤0.5%	/	/
Loss on drying	≤0.20%	≤0.50%	≤0.20%	≤0.20%
Residue on ignition	≤0.10%	≤0.10%	≤0.10%	≤0.10%
Endotoxin	<12EU/g	<12EU/g	<12EU/g	/
Total plate count	≤ 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

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