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L-Cysteinc hydrochloride monohydrate
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C3H7NO2S·HCl·H2O
175.64
L-Cysteine Hydrochloride Monohydrate |
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L-Cysteine Hydrochloride Monohydrate
[7048-04-6]
Anhydrous 157.62
[52-89-1] |
| » Cysteine
hydrochloride contains not less than 98.5 percent and not more
than 101.5 percent of C3H7NO2S·HCl, as
L-Cysteine hydrochloride, calculated on the dried basis. |
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Packaging and storage— Preserve in well-closed containers.
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| Identification: Infrared
Absorption. |
| Specific rotation |
between +5.7°and +6.8° |
| Loss on drying |
between 8.0% and 12.0% |
| Residue on ignition |
not more than 0.4% |
| Sulfate |
0.03% |
| Iron |
0.003% |
| Heavy metals |
0.0015% |
| Chromatographic purity |
not
more than 0.5% (individual impurity)
not more than 2.0% (total
impurity) |
| Organic volatile impurities |
meets the requirements |
| Assay |
not
less than 98.5 percent and
not more than 101.5 percent
of C3H7NO2S·HCl |
