There are three distinct chemical compounds which are dichlorobenzenes: 1,2-Dichlorobenzene or ortho-dichlorobenzene; 1,3-Dichlorobenzene or meta-dichlorobenzene; 1,4-Dichlorobenzene or para-dichlorobenzene.
All three isomers are colorless chlorobenzenes with the formula CHCl. They differ structurally based on where the two chlorine atoms are attached to the ring.
See also Dibromobenzene
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