Trichlorophenol
A trichlorophenol is any organochloride of phenol that contains three covalently bonded chlorine atoms. Trichlorophenols are produced by electrophilic halogenation of phenol with chlorine.{{cite journal |last1=Ebel |first1=Eileen |last2=Bell |first2=Jane |last3=Fries |first3=Arthur |last4=Kasey |first4=Carl |last5=Berkebile |first5=J. M. |title=Preparation of 2,4-D(2,4-dichlorophenoxyacetic acid) from phenol and monochloracetic acid. |journal=J. Chem. Educ. |date=1947 |volume=24 |issue=9 |page=449 |doi=10.1021/ed024p449 |accessdate=13 July 2020 |url=https://pubs.acs.org/doi/pdf/10.1021/ed024p449}} Different isomers of trichlorophenol exist according to which ring positions on the phenol contain chlorine atoms. 2,4,6-Trichlorophenol, for example, has two chlorine atoms in the ortho positions and one chlorine atom in the para position.
There are six different isomers: