L-Histidine is an essential amino acid for human development which the body cannot produce on its own. L-Histidine is one of the 22 proteinogenic amino acids. L-Histidine precursor to histamine and a component of carnosine.Appearance: White crystals or crystalline powderPurity: ≥99%pH:3.5-4.5Melting Point: 282°C (dec)Optical Rotation: [a]20D = + 12 ± 2ºHeavy Metals≤ 10 ppmArsenic (As2O3):≤0.0001%Chloride (Cl):≤0.02%Sulfate (SO4):≤0.02%Ammonium (NH4):≤0.02%Iron (Fe):≤00.001%Optical Rotation:[a]20D =+12±2°Infrared Spectrum:Conforms to structureTransmission:≥98%Loss on Drying:≤ 0.2%Other Amino Acids:Chromatographically not detectableResidue On Ignition:≤ 0.10%Storage Temp: Store at RT
