Applications
L-Cysteine hydrochloride monohydrate USP is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.
U.S.P. A chemical grade of sufficient purity to meet or exceed requirements of the U.S. Pharmacopeia (USP); acceptable for food, drug, or medicinal use; may be used for most laboratory purposes.
Sales Specifications
Appearance: White crystalline powder
Assay: 99.0-100.5%
Identification: Infrared Absorption
Specific Rotation: +5.5-+7.0o
State of Solution: Clear and colorless, 98.0% Min
Chloride: 19.89%-20.29%
Ammonium: 0.02% Max
Sulfate: 0.020% Max
Iron: 10 PPM Max
Heavy Metals: 10 PPM Max
Arsenic: 1 PPM Max
Other Amino Acids: Chromatographically not detectable
Loss on Drying: 8.5%-12.0%
Residue on Ignition: 0.1% Max
pH: 1.5-2.0
Particle Size: 20 Mesh
Bulk Density: 0.7-0.9 g/ml
Tapped Density: 0.8-1.2 g/ml
Lead: 1 PPM Max
Mercury: 1 PPM Max
Cadmium: 1 PPM Max
Total Plate Count: Yeast and Molds: Coliforms: E Coli: Negative
Salmonella: Negative
Pseudomonas: Negative
S. Aureus: Negative
Packing
55.12 lb drum
