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1,3,5-Trichlorobenzene is an organochlorine compound. It is one of the three isomers of trichlorobenzene . Being more symmetrical than the other isomers, it exists as colourless crystals whereas the other isomers are liquids at room temperature.
1,2,3-Trichlorobenzene is an organochlorine compound with the chemical formula C 6 H 3 Cl 3. [ 1 ] [ 2 ] This is one of three isomers of trichlorobenzene ; the two others are 1,2,4-Trichlorobenzene and 1,3,5-Trichlorobenzene .
The C 3-benzenes are a class of organic aromatic compounds which contain a benzene ring and three other carbon atoms. For the hydrocarbons with no further unsaturation, there are four isomers. The chemical formula for all the saturated isomers is C 9 H 12 .
1,2,4,5-Tetrachloro-3-nitrobenzene (tecnazene) is an organic compound with the formula HC 6 Cl 4 NO 2. It is a colorless solid. A related isomer is 1,2,3,4-tetrachloro-5-nitrobenzene. It is used as a standard for quantitative analysis by nuclear magnetic resonance. [4] [5]
Using an acid ratio of 30/56/14, the product mix is typically 34-36% 2-nitrochlorobenzene and 63-65% 4-nitrochlorobenzene, with only about 1% 3-nitrochlorobenzene. Since the above synthetic route does not efficiently produce the 3-isomer, the route most commonly used by chemists is the chlorination of nitrobenzene.
The compound was first synthesized in 1924 by Oldřich Turek. [3] It can be prepared by the reaction of 1,3,5-trichloro-2,4,6-trinitrobenzene with sodium azide. 1,3,5-trichloro-2,4,6-trinitrobenzene is obtained from the nitration of 1,3,5-trichlorobenzene with nitric acid and sulfuric acid. [3]
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]
Trinitrobenzene is more explosive than TNT, but more expensive. [2] It is primarily used as a high explosive compound for commercial mining and military applications. It has also been used as a narrow-range pH indicator, an agent to vulcanize natural rubber, and a mediating agent to mediate the synthesis of other explosive compounds.