[Commodity name]: L-METHIONINE [Structural formula]: CH3SCH2CH2CH(NH2)COOH [Molecular Formula]: C5H11NO2S [Molecular weight]: 149.21 [Properties]: White crystals or crystalline powder,special odor, slightly bitterness. Soluble in water, insoluble in ethanol and in ether. [Standard]: Pharma Grade(USP32), Food Garde(FCC Ⅴ) or according to buyer. Items Pharma Grade(usp32) Food Grade(FCC V) Appearance White crystal powder White crystal powder Assay(on dry basis) 98.5％ ～ 101.5% 98.5％ ～ 101.5% Specific rotation +22.4º ～ +24.7º +21.0º ～ +25.0º PH 5.6 ～6.1 -- Loss on drying 0.3% Max 0.5% 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 -- [USAGE]: L-METHIONINE is one of the essential amino acids, mainly used as food additives, and formatting complex amino acid perfusion and preparation. [Packing]: In fiber drum 25KG net each. [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.