Chemistry:Tetrachlorobenzene
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1,2,3,4-Tetrachlorobenzene
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1,2,3,5-Tetrachlorobenzene
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1,2,4,5-Tetrachlorobenzene
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3D model (JSmol)
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ChEBI |
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ChEMBL |
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ChemSpider | |
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KEGG |
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PubChem CID
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RTECS number |
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CompTox Dashboard (EPA)
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Properties | |
C6H2Cl4 | |
Molar mass | 215.88 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Tracking categories (test):
Tetrachlorobenzene is any of three isomeric chlorobenzenes with the molecular formula C
6H
2Cl
4. They differ by the positions of the chlorine atoms around the ring. Tetrachlorobenzenes are colorless crystalline compounds.[1]
Properties
isomer | m.p. (°C) | b.p. (°C) | m.p. (g/cm3 @100 °C) |
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1,2,3,4 | 47 | 254 | 1.539 |
1,2,3,5 | 51.5 | 246 | 1.523 |
1,2,4,5 | 141 | 245 | 1.454 |
Synthesis
1,2,4,5-Tetrachlorobenzene can be produced by electrophilic halogenation of benzenes and some chlorobenzenes.[2] 1,2,3,4-Tetrachlorobenzene can only be produced by chlorination of 1,3,5-trichlorobenzene.
Uses
1,2,4,5-tetrachlorobenzene once was used as intermediates in the production of pesicides,[3] specifically trichlorophenols. This method has been discontinued because it also produced 2,3,7,8-tetrachlorodibenzo-p-dioxin.[1]
See also
- Tetrabromobenzene
- Tetraiodobenzene
References
- ↑ 1.0 1.1 Beck, Uwe; Löser, Eckhard (2011). "Chlorinated Benzenes and Other Nucleus‐Chlorinated Aromatic Hydrocarbons". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.o06_o03. ISBN 9783527303854.
- ↑ "US4205014A Process for 1,2,4,5-tetrachlorobenzene". Espacenet. https://worldwide.espacenet.com/patent/search/family/026711356/publication/US4205014A?q=pn%3DUS4205014A.
- ↑ (in en) NTP Toxicity Study Reports. National Toxicology Program. 1991. p. 11. https://books.google.com/books?id=4mrSWQi2luwC&dq=%2522Tetrachlorobenzene%2522&pg=PA11. Retrieved 22 June 2023.
Original source: https://en.wikipedia.org/wiki/Tetrachlorobenzene.
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