[Name]: L-Threonine [Structural formula]: CH3CH(OH)CH(NH2)COOH [Molecular Formula]: C4H9NO3 [Molecular weight]: 119.12 [Properties]: White crystals or crystalline powder,odorless,slightly sweet. Freely soluble in water, practically insoluble in ethanol and in ether. [Usage]: L-Threonine is one of the essential amino acids, mainly used as food additives, and formatting complex amino acid perfusion and preparation. [Quality]Pharma Grade(USP32) , Food Grade( FCC Ⅴ) or according to buyer’s requirement. Items Pharma Grade(USP32) Food Grade(FCC Ⅴ) Appearance White crystals or crystalline powder White crystalline powder Assay(on dry matter) 98.5% ～ 101.5%　 98.5% ～ 101.5%　 Specific rotation -26.7º ～ -29.1º -26.5º ～ -29.0º PH 5.0 ～ 6.5 -- Loss on drying 0.2% Max 0.2% Max Residue on ignition 0.4% Max 0.1% Max Chloride 0.05% Max -- Sulfate 0.03% Max -- Iron 0.003% Max -- Heavy metals 0.0015% Max -- Lead -- 5mg/kg Max Chromatographic purity Pass USP test -- [Packing]: In fiber drum of 25KG net each or according to buyer’s need. [Transport and Storage]: Handle with cares to avoid damaging the package, protects them from sunshine or rain. Don't transport it with poisonous or harmful goods. Stored in shaded, cool and dry places.