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Bromoiodomethane is a halomethane with the formula BrCH 2 I. It is a colorless liquid, although older samples appear yellow. It is a colorless liquid, although older samples appear yellow. The compound has been investigated as a reagent for cyclopropanation by the Simmons-Smith reaction , but diiodomethane and chloroiodomethane are preferred.
For example, the three isomers of xylene CH 3 C 6 H 4 CH 3, commonly the ortho-, meta-, and para-forms, are 1,2-dimethylbenzene, 1,3-dimethylbenzene, and 1,4-dimethylbenzene. The cyclic structures can also be treated as functional groups themselves, in which case they take the prefix "cyclo alkyl -" (e.g. "cyclohexyl-") or for benzene, "phenyl-".
2-Chloro-1,1-difluoroethene can be removed from HFC-134a by oxidation with potassium permanganate. [13] Alternately oxidation can occur with hydrogen peroxide. Fluoridation can occur with HF with a chromium trioxide catalyst, producing CF 3 CH 2 Cl. With fluorine around −60°C it forms CF 3 CHClF. [14] An argon complex with the molecule is known.
Halothane (2-bromo-2-chloro-1,1,1-trifluoroethane) is a dense, highly volatile, clear, colourless, nonflammable liquid with a chloroform-like sweet odour. It is very slightly soluble in water and miscible with various organic solvents.
The melting and boiling points of chloro-, bromo-, and iodoalkanes are higher than the analogous alkanes, scaling with the atomic weight and number of halides. This effect is due to the increased strength of the intermolecular forces —from London dispersion to dipole-dipole interaction because of the increased polarizability.
In 2013, a peer-review panel convened by the U.S. National Toxicology Program unanimously recommended that 1-bromopropane, be classified as reasonably anticipated human carcinogens. [19] Extended occupational exposure to 1-bromopropane in higher concentrations than recommended has resulted in significant injury to workers in the United States. [20]
"A TLV–TWA of 1 ppm (3.89 mg/m3) is recommended for occupational exposure to methyl bromide"-ACGIH 8 hour time weighted average. Immediately Dangerous To Life or Health Concentration by NIOSH: "The revised IDLH for methyl bromide is 250 ppm based on acute inhalation toxicity data in humans [Clarke et al. 1945].
Iodomethane, also called methyl iodide, and commonly abbreviated "MeI", is the chemical compound with the formula CH 3 I. It is a dense, colorless, volatile liquid. In terms of chemical structure, it is related to methane by replacement of one hydrogen atom by an atom of iodine.