PentachloroanilinePentachloroanilin is a chemical compound from the group of chloroanilines. Its chemical formula is. Pentachloroaniline occurs as a derivative of pentachloronitrobenzene.SynthesisPentachloroaniline can be obtained by reducing pentachloronitrobenzene with tin, hydrochloric acid, and ethanol. It is also formed by the action of chlorine on an ethereal solution of symmetrical m-dichloroaniline.Physical characteristicsPentachloroaniline is a yellow crystalline solid, practically insoluble in water, but readily dissolves in organic solvents. Highly flammable.UsesPentachloroaniline is highly important in the industrial field, where it is utilized in various ways. Belonging to the aniline group, which comprises substances such as aniline and chloroanilines, it is employed as a dye and as an intermediate in the synthesis of plasticizers and pesticides. Additionally, it is involved in rubber production and functions as a flame retardant.