Pentachlorobenzene: Difference between revisions

Latest revision as of 12:09, 15 February 2025

Pentachlorobenzene[edit]

Structural formula of pentachlorobenzene

Pentachlorobenzene is an organochlorine compound with the chemical formula C_HCl_. It is a derivative of benzene in which five of the hydrogen atoms are replaced by chlorine atoms. This compound is a colorless solid that is used in various industrial applications.

Chemical Properties[edit]

Pentachlorobenzene is a stable compound under normal conditions. It is poorly soluble in water but soluble in organic solvents such as benzene, toluene, and chloroform. The presence of multiple chlorine atoms makes it a persistent organic pollutant.

Structure[edit]

The structure of pentachlorobenzene consists of a benzene ring with five chlorine atoms attached. The chlorine atoms are positioned symmetrically around the ring, which contributes to the compound's stability and low reactivity.

Production[edit]

Pentachlorobenzene is produced as a byproduct in the manufacture of polychlorinated biphenyls (PCBs) and other chlorinated compounds. It can also be synthesized by the chlorination of benzene or chlorobenzene under controlled conditions.

Uses[edit]

Pentachlorobenzene has been used in the past as a fungicide and flame retardant. However, due to its environmental persistence and potential health effects, its use has been restricted in many countries.

Environmental Impact[edit]

Pentachlorobenzene is classified as a persistent organic pollutant (POP) under the Stockholm Convention. It can accumulate in the environment and in the tissues of living organisms, leading to potential ecological and health risks. It is resistant to degradation and can be transported over long distances in the atmosphere.

Health Effects[edit]

Exposure to pentachlorobenzene can occur through inhalation, ingestion, or skin contact. It is considered to be toxic, with potential effects on the liver, kidneys, and nervous system. Long-term exposure may lead to more serious health issues, including cancer.

Regulation[edit]

Due to its persistence and toxicity, the use and production of pentachlorobenzene are regulated under international agreements such as the Stockholm Convention. Many countries have implemented measures to reduce or eliminate its release into the environment.

Related Pages[edit]

@@ Line 1: / Line 1: @@
-'''Pentachlorobenzene''' ('''PeCB''') is a [[chlorocarbon]] that is classified as a [[persistent organic pollutant]] (POP). It is a white crystalline solid that is nearly insoluble in water but soluble in organic solvents. It is used primarily as a chemical intermediate in the manufacture of other chemicals.
+{{DISPLAYTITLE:Pentachlorobenzene}}
-==Chemical Properties==
+== Pentachlorobenzene ==
-Pentachlorobenzene has the chemical formula C6Cl5H. It is a derivative of [[benzene]], where five of the hydrogen atoms have been replaced by [[chlorine]] atoms. It has a molecular weight of 250.33 g/mol. It is non-flammable and has a melting point of 166-168 °C and a boiling point of 323 °C.
+[[File:Pentachlorobenzene.svg|thumb|right|Structural formula of pentachlorobenzene]]
-==Uses==
+'''Pentachlorobenzene''' is an organochlorine compound with the chemical formula C_HCl_. It is a derivative of [[benzene]] in which five of the hydrogen atoms are replaced by [[chlorine]] atoms. This compound is a colorless solid that is used in various industrial applications.
-Pentachlorobenzene was used in the past as a fungicide and as a flame retardant in plastics. However, due to its toxicity and persistence in the environment, its use has been largely phased out. Today, it is primarily used as a chemical intermediate in the manufacture of other chemicals, including [[hexachlorobenzene]] and [[pentachlorophenol]].
-==Health Effects==
+== Chemical Properties ==
-Exposure to pentachlorobenzene can cause a variety of health effects. Short-term exposure can cause irritation of the skin, eyes, and respiratory tract. Long-term exposure can lead to liver and kidney damage, and may also increase the risk of cancer. It is considered a possible human carcinogen by the [[International Agency for Research on Cancer]] (IARC).
+Pentachlorobenzene is a stable compound under normal conditions. It is poorly soluble in water but soluble in organic solvents such as [[benzene]], [[toluene]], and [[chloroform]]. The presence of multiple chlorine atoms makes it a persistent organic pollutant.
-==Environmental Impact==
+=== Structure ===
-Pentachlorobenzene is a persistent organic pollutant, meaning it does not readily break down in the environment. It can accumulate in the soil and in the fatty tissues of animals. It is also capable of long-range transport, and has been detected in remote regions such as the Arctic.
+The structure of pentachlorobenzene consists of a benzene ring with five chlorine atoms attached. The chlorine atoms are positioned symmetrically around the ring, which contributes to the compound's stability and low reactivity.
-==Regulation==
+== Production ==
-Due to its toxicity and persistence in the environment, the production and use of pentachlorobenzene is regulated in many countries. It is listed as a POP under the [[Stockholm Convention]], an international treaty designed to eliminate or restrict the production and use of persistent organic pollutants.
+Pentachlorobenzene is produced as a byproduct in the manufacture of [[polychlorinated biphenyls]] (PCBs) and other chlorinated compounds. It can also be synthesized by the chlorination of benzene or chlorobenzene under controlled conditions.
-[[Category:Chemical compounds]]
+== Uses ==
+Pentachlorobenzene has been used in the past as a fungicide and flame retardant. However, due to its environmental persistence and potential health effects, its use has been restricted in many countries.
+== Environmental Impact ==
+[[File:Pentachlorobenzene.svg|thumb|left|Pentachlorobenzene molecule]]
+Pentachlorobenzene is classified as a persistent organic pollutant (POP) under the [[Stockholm Convention]]. It can accumulate in the environment and in the tissues of living organisms, leading to potential ecological and health risks. It is resistant to degradation and can be transported over long distances in the atmosphere.
+== Health Effects ==
+Exposure to pentachlorobenzene can occur through inhalation, ingestion, or skin contact. It is considered to be toxic, with potential effects on the liver, kidneys, and nervous system. Long-term exposure may lead to more serious health issues, including cancer.
+== Regulation ==
+Due to its persistence and toxicity, the use and production of pentachlorobenzene are regulated under international agreements such as the Stockholm Convention. Many countries have implemented measures to reduce or eliminate its release into the environment.
+== Related Pages ==
+* [[Organochlorine compound]]
+* [[Persistent organic pollutant]]
+* [[Stockholm Convention]]
+* [[Chlorobenzene]]
+[[Category:Organochlorides]]
 [[Category:Persistent organic pollutants]]
-[[Category:Chloroarenes]]
+[[Category:Environmental chemistry]]
-[[Category:IARC Group 2B carcinogens]]
-{{Chemical-compound-stub}}
-{{medicine-stub}}