L-Histidine

L-Histidine Identification Name L-Histidine Synonyms His; L-2-Amino-3-(4-imidazolyl)propionic acid Molecular Formula C6H9N3O2 Molecular Weight 155.16 CAS Registry Number 71-00-1 EINECS 200-745-3 FEMA 3694 Properties Melting point 282 ºC alpha 12.4 º (c=11,6N HCl) Water solubility 41.6 g/L (25 ºC) Safety Data Safety Description S24/25 Packaging & Delivery Packaging Detail: 25kg/drum Delivery Detail within a week Specifications Product name: L-Histidine CAS number: 71-00-1; Appearance: White crystal or crystalline powder Assay: 98.5% Standard: BP/FCC/USP Description White crystalline powders Assay 98.0~101.0% State of solution Not less than 95.0% Specific optical rotation +12.0°~ +12.8° Chloride Not more than 0.02% Ammonium Not more than 0.02% Sulfate Not more than 0.02% Iron Not more than 10ppm Heavy metals Not more than 10ppm Arsenic Not more than 1ppm Loss on drying Not more than 0.20% Residue on ignition Not more than 0.10%