Product Detail

L-Phenylalanine	EP6	AJI92	USP40
Description	A white or almost white,crystalline powder,or shiny,white flakes	White crystals or crystalline powder	White crystals or crystalline powder
Solubility	Sparingly soluble in water,very slightly soluble in alcohol.It dissolves in dilute mineral acids and in dilute solutions of alkali hydroxides	/	/
Appearance of solution	Clarity of solution:5% water solution should be clear	/	/
Appearance of solution	Colour of solution:5% water solution should be not more intensely coloured than reference solution BY6	/	/
Identification	Conforms	Conforms	Conforms
Assay	98.5-101.0%	99.0%～100.5%	98.5%~101.5%
pH	/	5.4~6.0	5.5~7.0
Transmittance	/	≥98.0%	/
Loss on drying	≤0.5%	≤0.20%	≤0.3%
Residue on ignition	≤0.1%	≤0.10%	≤0.4%
Ninhydrin-positive substances (TLC)	Conforms	/	/
Chloride	≤200ppm	≤0.020%	≤0.05%
Heavy Metals	≤10ppm	≤10ppm	≤15ppm
Lead	/	/	/
Iron	≤10ppm	≤10ppm	≤30ppm
Sulfate	≤300ppm	≤0.020%	≤0.03%
Endotoxin	/	/	/
Arsenic	/	≤1ppm	/
Ammonium	≤200ppm	≤0.02%	/
Other amino acids	/	Conforms	Conforms
Pyrongen	/	Conforms	/
Specific Rotation	-33.0°～ -35.5°	-33.5°~ -35.0°	-32.7°~-34.7°