| Compound Description | P-dichlorobenzene appears as a white colored liquid with the odor of moth balls. Denser than water and insoluble in water. Flash point below 200 °F. Used as a moth repellent, to make other chemicals, as a fumigant, and for many other uses.1,4-dichlorobenzene is a dichlorobenzene carrying chloro groups at positions 1 and 4. It has a role as an insecticide.The primary exposure to 1,4-dichlorobenzene is from breathing contaminated indoor air. Acute exposure to 1,4-dichlorobenzene, via inhalation in humans, results in irritation of the skin, throat, and eyes. Chronic 1,4-dichlorobenzene inhalation exposure in humans results in effects on the liver, skin, and central nervous system . No information is available on the reproductive, developmental, or carcinogenic effects of 1,4-dichlorobenzene in humans. A National Toxicology Program study reported that 1,4-dichlorobenzene caused kidney tumors in male rats and liver tumors in both sexes of mice by gavage . EPA has classified 1,4- dichlorobenzene as a Group C, possible human carcinogen.Paradichlorobenzene is a synthetic, white crystalline solid that is practically insoluble in water and soluble in ether, chloroform, carbon disulfide, benzene, alcohol and acetone. It is used primarily as a space deodorant in products such as room deodorizers, urinal and toilet bowl blocks, and as an insecticide fumigant for moth control. When 1,4-dichlorobenzene is heated to decomposition, toxic gases and vapors are released. The primary route of potential human exposure to this compound is inhalation. Acute inhalation exposure to 1,4-dichlorobenzene can result in coughing and breathing difficulties. Breathing high levels of this chemical can cause headaches, dizziness and liver damage. Contact with 1,4-dichlorobenzene can irritate the eyes, leading to burning and tearing. It is reasonably anticipated to be a human carcinogen. p-Dichlorobenzene can cause cancer according to an independent committee of scientific and health experts.1,4-Dichlorobenzene is an organic compound with the formula C6H4Cl2. This colorless solid has a strong odor. In terms of its structure, the molecule consists of two chlorine atoms substituted for hydrogen at opposing sites on a benzene ring. p-DCB is used a pesticide and a deodorant, most familiarly in mothballs in which it is a replacement for the more traditional naphthalene. p-DCB is also used as a precursor in the production of the polymer poly. Under California's Proposition 65, p-DCB is listed as known to the State to cause cancer.[8] A probable mechanism for the carcinogenic effects of mothballs and some types of air fresheners containing p-DCB has been identified. |