acetic acid. A product of the oxidation of ethylic alcohol and of the destructive distillation of wood, applied locally as a counterirritant.

benzoic acid. External uses, antiseptic.

carbolic acid. Used in podiatry, as an antiseptic, as a disinfectant and as an anesthetic.

chromic acid. Has caustic properties.

dichloracetic acid. Used as a caustic application to venereal sores.

glacial acetic acid. Employed externally as a caustic for removal of warts and helomata.

hydrochloric acid. Externally employed as an escharotic.

monochloracetic acid. Used as a caustic for helomata and verrucae.

nitric acid. Used as a caustic against verrucae.

nitrohydrochloric acid. An active caustic agent.