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L-Cysteine Monohydrochloride |
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Chemical Name: L-2-Amino-3-mercaptopropionic acid Monohydrochloride
Molecular Formula: C3H7NO2S·HCl·H2O
Molecular Weight: 175.63
Cas NO: [7048-04-6]
Characteristics: It is a white crystalline powder, strongly acid taste, easily soluble in water but insoluble in alcohol and ether.
Quality Standards: CP2000, USP24, AJI92 etc. |
Specification Sheet
(AJI92) |
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Expiry Period : 2 years
Packaging: 25kg / drum |
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Items |
Specifications |
Description |
White crystals or crystalline powder |
Assay, % |
99.0 ~ 100.5 |
Identification |
Infrared absorption spectrum |
Specific rotation,° |
+5.5 ~ +7.0 |
State of solution, % |
≥98.0 |
Chloride (Cl) , % |
19.89 ~ 20.29 |
Ammonium (NH4) , % |
≤0.02 |
Sulfate (SO4) , % |
≤0.020 |
Iron (Fe), ppm |
≤10 |
Heavy metals (Pb) , ppm |
≤10 |
Arsenic (As2O3) , ppm |
≤1 |
Other amino acids |
Chromatographically not detectable |
Loss on drying , % |
8.5 ~ 12.0 |
Residue on ignition (sulfated) , % |
≤0.10 |
PH |
1.5 ~ 2.0 |
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