L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly used as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavors.Purity (Titration: anhydrous basis):99.0-100.5%Form:White cyrstalline powderMelting Point:166-170°CSolubility:Methanol, WaterOptical Rotation ([a]D20):+5.5 to +7.0ºHeavy Metals: ≤ 0.001%Arsenic (As2O2): ≤ 0.0001%Chloride (Cl-): 19.89-20.29%Sulfate (SO4): ≤ 0.02%Ammonium (NH4): ≤ 0.002%Iron (Fe): ≤ 0.001%Infrared Spectrum: Conforms to structureTransmission: ≥ 98.0%Loss on Drying (USP23): 8-12%Organic Volatile Impurities (USP23): ConformsOther Amino Acids: None DetectedResidue On Ignition: ≤ 0.1%
