Component of TCP antiseptic. Computer model of a molecule of 2,4,6-trichlorophenol, a component of the commercially available antiseptic TCP. This is used to clean cuts and grazes, and as a gargle to treat sore throats. The chemical formula of this chemical is C6.H3.Cl3.O. This molecular model has colour-coded spheres as atoms: carbon (light blue), hydrogen (grey), chlorine (green), oxygen (red). 2,4,6-trichlorophenol on its own is a severe skin and eye irritant, so it is diluted and mixed with other chemicals before use. It is also used as a fungicide, herbicide, insecticide, defoliant, and glue preservative.