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L-CYSTEINE HYDROCHLORIDE MONOHYDRATE For Biochemistry

Confirms to USP (Stereospecific,irreversible inhibitor of histidene,ammonia-lyase.)

COAs

Packings

25 g (00025)

100 g (00100)

500 g (00500)

1000 g (01000)

1PW1200060 1PW1200200 1PW1200500 1PW1201600
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Article No. 03141 Grade For Biochemistry
Purity 98.5% CAS No. 7048-04-6
Molecular Formula C3H8ClNO2S.H2O Molecular Weight 175.64
H.S. Code 2930.9040 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour Colorless crstals
pH value 1 - 2 Melting point/ Freezing point [°C] 176°C
Solubility in water [% weight] 100 g/l at 25 °C

Specifications

Appearance White crystals or crystalline powder; soluble in water,in alcohol and in acetone Solubility Soluble in water, in alcohol and in acetone
Identification (by IR) Passes USP test Assay (on dried basis) 98.5% – 101.5%
Residue on ignition NMT 0.4% Chloride and sulfate (Sulfate) NMT 0.03%
Iron (Fe) NMT 30 ppm Related Substances ( by TLC) -
Individual impurities Max. 0.5% Total impurities Max. 2.0%
Specific optical rotation (at 589 nm) (c=8, 6 N HCl) on dried substance +5.7° to +6.8° Loss on Drying for (For 24 h in a vacuum desiccator using a suitable desiccant and maintaining a pressure of NMT 5 mm of mercury Hg) 8.0 - 12.0%

Safety Information and Hazard Symbols

Exclamation Mark
Symbol: GHS07
 Signal Word: Warning
 Hazardous Statement: H315-H319-H335
 Precaution Statement: P261-P305 + P351 + P338
Revision Date: 02-Sep-2026

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