L-Cysteine 99.0-100.5% Monohydrate HCL


L-Cysteine 99.0-100.5% Monohydrate HCL is Currently not available from stock


L-Cysteine is an α-amino acid. It is a semi-essential amino acid, which means that it can be biosynthesized in humans.

Please note this is not the same as N-Acetylcysteine.

  • Organic Synthesis
  • Wave Applications (Hair)
  • Breaking up Disulphide bonds in hairs keratin
  • Precursor in food, pharmaceutical and personal car industries

Minimum Assay: 99.0-100.5%
Molecular Formula: C3H7NO2S•HCl•H2O
Molecular Weight: 175.64 (157.62anhy) 
Melting Point: 175 deg C
Specific Rotation [0]D20: +5.5 to +7.0
Sensitivity: Air Sensitive
pH: 1.5 – 2.0
State of Solution: >98%
Chloride (cl): 19.89-20.29%
Sulphate (SO4): <0.020%
Ammonium (NH4): <0.02%
Heavy Metals (as Pb): <10ppm
Loss on drying: 8.5 – 12.0%
Iron Content: <10ppm
Residue on Ignition: <0.10%
Other Amino Acids: Chromatographically undetected

Hazard Phrases: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. Store in a well-ventilated place. Keep container tightly closed.

Cas No: 7048-04-6
Einecs No: 200-157-7


Specification – DOWNLOAD NOW

Additional information

Weight N/A
Pack Size

100gm, 250gm, 500gm, 1Kg