4-Chloro-ortho-phenylenediamine

**Semantic type:** Hazardous or Poisonous Substance

**Definition:** A synthetic, beige to grey-brown crystalline powder that is slightly soluble in water, soluble in benzene and petroleum ether, and very soluble in ethanol and diethyl ether. It is used as an oxidative base, a chemical intermediate to produce 5-chlorobenzotriazole (an isomer which is a photographic chemical), a curing agent for epoxy resins and a reagent in gas chromatography. The primary routes of potential human exposure to 4-chloro-o-phenylenediamine are ingestion, inhalation, and dermal contact during its production. It is reasonably anticipated to be a human carcinogen. (NCI05)

**Synonyms:** - 1,2-Diamine-4-chlorobenzene - 1-Chloro-3,4-diaminebenzene - 2-Amino-4-chloroaniline - 3,4-Diaminochlorobenzene - 4-Chloro-1,2-phenylenediamine - CI 76015 - Ursol Olive 6g - p-Chloro-1,2-phenylenediamine