L-Phenylalanine

L-Phenylalanine	CP2020	EP11	USP2023	AJI92	FCC11
Assay	≥98.5%	98.5-101.0%	98.5-101.5%	99.0-100.5%	98.5-101.5%
PH	5.4-6.0	/	5.4-6.0	5.4-6.0	5.4-6.0
Specific rotation[a]D20	-33.0°–35.0°	-33.0°–35.5°	/	-33.5°–35.0°	-33.2°–35.2°
Specific rotation[a]D25	/	/	-32.7°–34.7°	/	-32.7°–34.7°
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	≤5PPM
Arsenic	≤1PPM	/	/	≤1PPM	/
Other amino acids	≤0.50%	/	Individual impurities≤0.5% Total impurities≤2.0%	conform	/
Ninhydrin-positive substances	/	Each impurity≤ 0.2 % Total impurities≤ 0.5 %	/	/	/
Loss on drying	≤0.20%	≤0.50%	≤0.30%	≤0.20%	≤0.20%
Residue on ignition	≤0.10%	≤0.10%	≤0.40%	≤0.10%	≤0.10%
Endotoxin	<25EU/g	<25EU/g	<25EU/g	/	/
Total plate count	≤ 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

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