Lysine is a kind of amino acid, which can not be compounded in the animal body. It plays an important role in metabolism. it has the function of increasing the practical utilities of feed, improving the meat quality and promoting the growth of animals. Chemical formula C6H14N2O2-HCL Molecular weight: 182.65 Content of Nitrogen 15.34% Lysine 78.8% Crude protein 94.5% Density 0.56-0.61g/cm3 Loss on drying max. 1.0% L-purity 100% Solubility 500-600g/litre water (25C) Color: light brown to yellow Content (C6H14N2O2-HCL) on dry basis min. 98.5% Specific rotation +18.0C TO +21,5C Loss on drying max . 1.0% Residue after burning max. 0.3% Ammonium salt max. 0.04% Heavy metal max. 0.003% Arsenic max. 0.0002%