Product Detail

L-Isoleucine	AJI97	USP40	EP6.0
Description	White crystals or crystalline powder	/	White or almost white, crystalline powder or flakes
Identification	Conform	Conform	Conform
Solubility	/	/	Slightly Sparingly Soluble in water, 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
			Colour of solution:5% water solution should be not more intensely coloured than reference solution BY6
Assay	98.5%~101.0%	98.5%~101.5%	98.5%~101.0%
pH	5.5～6.5	5.5～7.0	/
Transmittance	≥98.0%	---	/
Loss on drying	≤0.20%	≤0.3%	≤0.5%
Residue on ignition	≤0.10%	≤0.3%	≤0.1%
Chloride	≤0.020%	≤0.05%	≤200ppm
Heavy Metals	≤10ppm	≤15ppm	≤10ppm
Iron	≤10ppm	≤30ppm	≤10ppm
Sulfate	≤0.020%	≤0.03%	≤300ppm
Ninhydrin-positive substances (TLC)	/	/	Conform
Arsenic	≤1ppm	/	/
Ammonium	≤0.02%	/	≤200ppm
Other amino acids	Conform	/	/
Pyrogen	Conform	/	/
Related compounds	/	Conform	/
Specific Rotation	﹢39.5°～﹢41.5°	﹢38.9°～﹢41.8°	+40.0°～ +43.0°