Triclosan CAS 3380-34-5
| CAS No. | 3380-34-5 |
| Molecular Formula | C12H7Cl3O2 |
| Molecular Weight | 289.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Triclosan is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Triclosan (CAS 3380-34-5), a certified reference material (molecular formula C12H7Cl3O2, MW 289.54 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H7Cl3O2, Triclosan contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 289.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Triclosan meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H7Cl3O2 |
| Molecular Weight | 289.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Triclosan Standards
- Triclosan Impurity 5 (CAS 67028-17-5)
- Triclosan-d3 (2,4-dichlorophenoxy-d3) (CAS 1020719-98-5)
- Triclosan-13C6 (CAS CATO-CCHM704075)
- Triclosan Methyl Ether (CAS 4640-01-1)
- Triclosan Impurity 4 (CAS 546127-65-5)
- Triclosan methyl D3 (methoxy D3) (CAS 1020720-00-6)
- Triclosan Impurity 3 (CAS 63709-57-9)
- Triclosan Impurity 7 (CAS 134479-47-3)
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