The chemical reactions and pathways involving 1,2,4-trichlorobenzene, a derivative of benzene with chlorine atoms attached to positions 1, 2 and 4 of the ring. It is a colorless liquid used as a solvent in chemical manufacturing, in dyes and intermediates, dielectric fluid, synthetic transformer oils, lubricants, heat-transfer medium and insecticides.
Source:
http://www.speclab.com/compound/c120821.htm