Name of product]: L-CYSTINE [Molecular Formula]: C6H12N2O4S2 [Molecular weight]: 240.30 [Character]: White crystals or crystalline powder, tasteless, soluble in water, insoluble in ethanol and ether. [Quality Standard]: AJI97, Food grade adopted as FCC V, Standard According to buyer's Requirements, Generally Item Food Grade(FCC V) Standard(AJI97) Appearance White crystals powder White Crystals/Crystalline Powder Assay(on dry matter) 98.5%～101.5% 98.5%～101.0% Transmittance --- Clear And Colorless,98.0%MIN Specific rotation -215°～-225° -218º～-224º Loss on drying 0.2% MAX 0.20%MAX Residue on ignition 0.1% MAX 0.10%MAX Lead 5mg/kg MAX 10PPM MAX Arsenic --- 1PPM MAX Iron --- 10PPM MAX Sulfate --- 0.02%MAX Ammonium --- 0.02%MAX Chloride --- 0.02%MAX pH --- 5.0～6.5 [Usage]: L-CYSTINE belongs to semi-essential amino acid, often used as nutritional supplement, necessary substance for forming skin and hair and promotes the therapy of operation and traumatic treatment. [Packing]: In kraft paper bags or in fiber drum of 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.