Product Detail

L-Serine	EP6	AJI92	USP40
Description	A white or almost white, crystalline powder or colourless crystals.	White crystals or crystalline powder	/
Solubility	Freely soluble in water,practically insoluble in alcohol.	/	/
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 intensively coloured than reference solution BY6	/	/
Identification	Conforms	Conforms	Conforms
Assay	98.5%-101.0%	99.0%~101.0%	98.5%~101.5%
pH	/	5.2～6.2	/
Transmittance	/	≥98.0%	/
Loss on drying	≤0.5%	≤0.20%	≤0.2%
Residue on ignition	≤0.1%	≤0.10%	≤0.1%
Ninhydrin-positive	Conforms	/	/
Chloride	≤200ppm	≤0.020%	≤0.05%
Heavy Metals	≤10ppm	≤10ppm	≤15ppm
Iron	≤10ppm	≤10ppm	≤30ppm
Sulfate	≤300ppm	≤0.020%	≤0.03%
Arsenic	/	≤1ppm	/
Ammonium	≤200ppm	≤0.02%	/
Other amino acids	/	Conforms	Conforms
Pyrongen	/	Conforms	/
Specific Rotation	+14.0 °to +16.0°	﹢14.4°～﹢15.5°	﹢14.0°～﹢15.6°