CHBr2Cl

CHBr2Cl, commonly called dibromochloromethane, is an organohalogen compound in the halomethane family. It features a central carbon atom bonded to one hydrogen and three halogen substituents: two bromine atoms and one chlorine atom, giving a tetrahedral geometry.

Dibromochloromethane is produced by halogenation of methane or by reactions involving halogenated methane derivatives. It can form unintentionally as a disinfection byproduct during chlorination or bromination of natural organic matter in water, and it has been detected in trace amounts in chlorinated waters.

Physical properties and appearance: It is a volatile, colorless liquid with limited water solubility and a tendency to partition into organic phases. Its volatility and halogen content influence its behavior in air and aquatic environments.

Reactivity and fate: In environmental conditions it is relatively persistent but can undergo hydrolysis and photochemical reactions, releasing halogen species. It is not a common industrial feedstock and is mainly encountered in environmental and academic contexts.

Safety and regulation: Dibromochloromethane is toxic and potentially carcinogenic. Human exposure can occur via drinking water, air, or skin contact. Regulatory frameworks often limit its concentration in drinking water, and handling should be performed with appropriate ventilation and containment.

Uses and occurrence: Its primary relevance is as a research chemical and as an environmental contaminant rather than a bulk chemical feedstock. It is discussed in the context of haloform chemistry and water treatment byproducts.

See also: chloroform (CHCl3), dichloromethane (CH2Cl2), dibromomethane (CH2Br2), dibromochloromethane in environmental chemistry.