trihalomethane
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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.
Research
9,232 papers- Association of blood trihalomethane concentrations with asthma in US adolescents: nationally representative cross-sectional study.The European respiratory journal · 2022
- The association between blood trihalomethane concentrations and high risk for prostate cancer: A nationally representative cross-sectional study.The Science of the total environment · 2025
- Blood Trihalomethane Concentrations and Osteoarthritis among U.S. Population Aged over 50 Years.Environmental science & technology · 2023
- Blood Trihalomethane Concentrations and Blood Pressure during and after Pregnancy: A Cohort Study in China.Environmental science & technology · 2025
- Blood trihalomethane concentrations and allergic sensitization: A nationwide cross-sectional study.The Science of the total environment · 2023
via PubMed
Wikidata facts
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- Trihalomethanes
- general formula
- CHX¹X²X³
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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 |}