Product Detail

L-Valine	USP24	EP6.0
Description	White crystals or crystalline powder, Slightly bitter taste	White or almost white, crystalline powder or colourless crystals.
Solubility	/	Soluble in water,very slightly soluble in alcohol
Identification	/	Conform
Appearance of solution	/	Clarity of solution:2.5% water solution should be clear.
Appearance of solution	/	Colour of solution:2.5% water solution should be not more intensively coloured than reference solution BY6.
Specific rotation	+26.6°~ +28.8°	+26.5° ~ +29.0°
Assay	98.5%~101.5%	98.5%~101.0%
pH	5.5~7.0	/
Chloride(Cl)	≤0.05%	≤200ppm
Sulfate	≤0.03%	≤300ppm
Ammonium	/	≤200ppm
Iron(Fe)	≤30ppm	≤10ppm
Arsenic (As)	≤1.5ppm	/
Heavy metals(Pb)	≤15ppm	≤10ppm
Loss on drying	≤0.30%	≤0.50%
Residue on ignition	≤0.10%	≤0.10%
Ninhydrin-positive	≤100CFU/g	Conform
Organic volatile impurities	Conforms	/