2,4-Dichlorophenol
| 2,4-Dichlorophenol | |
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2,4-Dichlorophenol |
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| Identifiers | |
| CAS number | 120-83-2  |
| PubChem | 8449 |
| ChemSpider | 8140 |
| UNII | R669TG1950 |
| KEGG | C02625 |
| ChEBI | CHEBI:16738 |
| ChEMBL | CHEMBL1143 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C6H4Cl2O |
| Molar mass | 163.00 g/mol |
| Appearance | White/off-white crystalline solid |
| Odor | Phenolic |
| Density | 1.38g/cm3 |
| Melting point |
42-43 °C, 315-316 K, 108-109 °F |
| Boiling point |
209-210 °C, 482-483 K, 408-410 °F |
| Hazards | |
| MSDS | External MSDS |
| R-phrases | R22 R24 R34 R51/53 |
| S-phrases | S26 S36/37/39 S45 S61 |
| NFPA 704 |
 1
4
0
COR
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| Flash point | 114 °C |
| LD50 | 47.0 mg/kg (Oral in rats) 790.0 mg/kg (Dermal exposure in mammals) |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
2,4-Dichlorophenol (2,4-DCP) is a chlorinated derivative of phenol with the molecular formula C6H4Cl2O. 2,4-DCP is used primarily as an intermediate in the preparation of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Annual worldwide production is estimated at 88 million pounds.[1] It is also a photo-degradation product of the common antibacterial and antifungal agent triclosan along with the dioxin 2,8-dichlorodibenzo-p-dioxin.[2][3]
Liquid (molten) 2,4-DCP is readily absorbed through the skin and contact with large amounts may be fatal.[4] Solid 2,4-DCP does not readily absorb through skin and has a lower NFPA H=3 rating (versus H=4 for molten 2,4-DCP).
[edit] See also
[edit] References
- ^ Desmurs J, Ratton S. Chlorophenols. In: Kirk-Othmer Encyclopedia of Chemical Technology, 4th Edition. Kroschwitz JI, Howe-Grant M, eds. New York: John Wiley and Sons, 1993;6:156-168
- ^ Singer H, Muller S, Tixier C, Pillonel L. (2002). "Triclosan: occurrence and fate of a widely used biocide in the aquatic environment: field measurements in wastewater treatment plants, surface waters, and lake sediments.". Environ Sci Technol. 36 (23): 4998–5004. doi:10.1021/es025750i. PMID 12523412.
- ^ Latch DE, Packer JL, Stender BL, VanOverbeke J, Arnold WA, McNeill K (2005). "Aqueous photochemistry of triclosan: formation of 2,4-dichlorophenol, 2,8-dichlorodibenzo-p-dioxin, and oligomerization products". Environ. Toxicol. Chem. 24 (3): 517–25. doi:10.1897/04-243R.1. PMID 15779749.
- ^ Kintz P, Tracqui A, Mangin P (1992). "Accidental death caused by the absorption of 2,4-dichlorophenol through the skin". Arch. Toxicol. 66 (4): 298–9. doi:10.1007/BF02307178. PMID 1514931.
