trihalomethane
Sign in to saveIn chemistry, trihalomethanes (THMs) are chemical compounds in which three of the four hydrogen atoms of methane () are replaced by halogen atoms. Trihalomethanes with all the same halogen atoms are called haloforms. Many trihalomethanes find uses in industry as solvents or refrigerants. Some THMs are also environmental pollutants, and a few are considered carcinogenic.
Article
7 sectionsContents
- Table of common trihalomethanes
- Industrial uses
- Refrigerants and solvents
- Occurrence and production
- Regulation
- References
- External links
In chemistry, trihalomethanes (THMs) are chemical compounds in which three of the four hydrogen atoms of methane () are replaced by halogen atoms. Trihalomethanes with all the same halogen atoms are called haloforms. Many trihalomethanes find uses in industry as solvents or refrigerants. Some THMs are also environmental pollutants, and a few are considered carcinogenic.
==Table of common trihalomethanes== {| class="wikitable" |+Common trihalomethanes (ordered by molecular weight) |- !Molecular formula !IUPAC name !CAS registry number !Common name !Other names !Molecule |- |CHF3 |trifluoromethane |75-46-7 |fluoroform |Freon 23, R-23, HFC-23 |align="center"|50px|Fluoroform |- |CHClF2 |chlorodifluoromethane |75-45-6 |align="center"|chlorodifluoromethane |R-22, HCFC-22 |align="center"|50px|Chlorodifluoromethane |- |CHCl3 |trichloromethane |67-66-3 |chloroform |R-20, methyl trichloride |align="center"|50px|Chloroform |- |CHBrCl2 |bromodichloromethane |75-27-4 |bromodichloromethane |dichlorobromomethane, BDCM |align="center"|50px|Bromodichloromethane |- |CHBr2Cl |dibromochloromethane |124-48-1 |dibromochloromethane |chlorodibromomethane, CDBM |align="center"|50px|Dibromochloromethane |- |CHBr3 |tribromomethane |75-25-2 |bromoform |methyl tribromide |align="center"|50px|Bromoform |- |CHI3 |triiodomethane |75-47-8 |iodoform |methyl triiodide |align="center"|50px|Iodoform |}