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L-Cysteine Monohydrochloride, Monohydrate
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USP-23
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| Tests | Specifications |
| Assay | 98.5 ~ 101.5% |
| Specific Rotation [a]20D | +5.7 ~ +6.8' |
| Color & Clarity of Solution | Colorless and clear |
| Loss on Drying | 8.0 ~ 12.0% |
| Residue on Ignition (as sulfate) | Less than 0.4% |
| Sulfate (SO4) | Less than 0.03% |
| Iron (Fe) | Less than 30 ppm |
| Heavy Metals (as Pb) | Less than 15 ppm |
|
Organic Volatile Impurity Benzene Chloroform 1,4-Dioxane Methylene Chloride Trichloroethylene |
กก Less than 100 ppm Less than 50 ppm Less than 100 ppm Less than 500 ppm Less than 100 ppm |
| Chloride (Cl) | 19.8 ~ 20.8% |