Molekula N-Acetyl-L-cysteine
Specification & product details.
N-Acetyl-L-cysteine is a derivative of the amino acid L-cysteine used as a mucolytic agent and antioxidant, commonly in respiratory therapies and…
CAS number: 616-91-1
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Specifications
| Property | Value |
| Appearance | White crystalline powder |
| Melting Point | 106 - 112°C |
| Specific rotation | +21° - +25° |
| Heavy metals | <10ppm |
| pH | 2.0 - 2.8 |
| Loss on Drying | max 1.0% |
| Assay | 98% min |
| Residue on Ignition | max .5% |
| Iron (Fe) | <20ppm |
| Arsenic (As) | <1ppm |
| Ammonium (NH4+) | <0.02% |
| Sulphates (SO4)(2-) | <0.03% |
| State of Solution | >98% |
| Chlorine (Cl) | <0.04% |
Storage & handling
| Property | Value |
| Storage Temperature | 2 to 8 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
| Appearance | White, crystalline powder |
| Odour | Slight acetic odor |
| Melting Point | 109.5 °C |
| Solubility (other solvents) | Soluble in water, alcohol, hot isopropyl alcohol, methyl acetate, and ethyl acetate |
| Vapour Pressure | 1.1 × 10⁻⁵ mmHg at 25 °C (Estimated) |
| pKa | pKa = 9.52 (at 25 °C) |
| log P (octanol/water) | -0.66 |
Identification
| Property | Value |
| SKU | 11557293 |
| CAS Number | 616-91-1 |
| IUPAC Name | (2R)-2-acetamido-3-sulfanylpropanoic acid |
| EC Number | 210-498-3 |
| Molecular Formula | HSCH2CH(NHCOCH3)CO2H |
| Molecular Weight | 163.19 |
| Exact Mass | 163.0303 |
| SMILES | CC(=O)N\[C@@H\](CS)C(=O)O |
| InChIKey | PWKSKIMOESPYIA-BYPYZUCNSA-N |
| InChI | InChI=1S/C5H9NO3S/c1-3(7)6-4(2-10)5(8)9/h4,10H,2H2,1H3,(H,6,7)(H,8,9)/t4-/m0/s1 |
| PubChem CID | 12035 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29309016 |
| Tariff Code | 2930901600 |
Safety & GHS
Warning
- Health HazardGHS07
Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P261Avoid breathing dust/fume/gas/mist/vapours/spray
- P280Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313IF exposed or concerned: Get medical advice/attention
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Alternative names
Acetadote; Acetilcisteina; acetylcysteine; Acetylcysteinum; Brunac; Fluimucetin; L-Acetylcysteine; mercapturic acid; N-Acetylcysteine; Respaire
Product documentation
Product specification PDF. Batch-specific certificates of analysis and safety data sheets are available on request.
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