Product Detail

L-Threonine	EP6	AJI92	USP40
Description	White or almost white,crystalline powder or colourless crystals	White crystals or crystalline powder	/
Solubility	Soluble in water, practically insoluble in alcohol.	/	/
Identification test (A,B）	Conforms	Conforms	Conforms
Appearance of solution	Solution S is clear and colourless	/	/
Assay	99.0-101.0%	99.0%～100.5%	98.5%～101.5%
pH	/	5.2~6.2	5.0~6.5
Transmittance	/	≥98.0%	/
Loss on drying	≤0.5%	≤0.20%	≤0.2%
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
Iron	≤10ppm	≤10ppm	≤0.003%
Sulfate	≤300ppm	≤0.020%	≤0.03%
Arsenic	/	≤1ppm	/
Ammonium	≤200ppm	≤0.02%	/
Other amino acids	/	Conforms	Conform
Pyrongen	/	Conforms	/
Specific Rotation	-27.6°～-29.0°	-27.6°~ -29.0°	-26.7°~-29.1°