Product Detail

L-Aspartic Acid	AJI97	USP40	EP6.0
Description	White crystalline powder	/	A white or almost white, crystalline powder or colourless crystals.
Solubility	/	/	Slightly soluble in water, practically insoluble in alcohol.It dissolves in dilute mineral acids and in dilute solutions of alkali hydroxides.
Identification	Conforms	Conforms	Conforms
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.
Assay	98.5%~101.0%	98.5%~101.5%	98.5-101.5%
pH	2.5~3.5	/	/
Transmittance	≥98.0%	/	/
Loss on drying	≤0.20%	≤0.5%	≤0.5%
Residue on ignition	≤0.10%	≤0.1%	≤0.1%
Chloride	≤0.020%	≤0.02%	≤200ppm
Heavy Metals	≤10ppm	≤10ppm	≤10ppm
Iron	≤10ppm	≤10ppm	≤10ppm
Sulfate	≤0.020%	≤0.03%	≤300ppm
Arsenic	≤1ppm	/	/
Ammonium	≤0.02%	/	≤200ppm
Other amino acids	/	Conforms	/
Pyrogen	Conforms	/	/
Specific Rotation	+24.8°~+25.8°	+24.0°~+26.0°	+24.0° to +26.0°
Ninhydrin-positive substances (TLC)	/	/	Conforms
Related compounds	/	Conforms	/