benzene is classified as:


Benzene is classified as a human carcinogen … - Benzene has a ring of carbon atoms in its structure. It is highly flammable and has low water solubility. Occupational exposure to benzene is linked to leukemia. It is classified as a hydrocarbon as it has only carbon and hydrogen atoms. Because of the flammability, toxicity, and volatility of benzene, transfers from one vessel to another are conducted in closed systems. Benzene derived products are well known to be pleasantly fragrant.For this reason, organic compounds containing benzene rings were classified as being "aromatic" (sweet smelling) amongst scientists in the early 19th century when a relation was established between benzene derived compounds and sweet/spicy … Benzene is the simplest aromatic hydrocarbon and belongs to the group volatile organic compounds (VOC). An organic compound is classified as aromatic if it fits which of the following criteria? If there are other groups present on the benzene ring the compound is said to be a substituted benzene. Benzene is known as an “aromatic hydrocarbon”. The Phenyl Group. Benzene is also classified as a known human carcinogen (category A) by the EPA and American Conference of Governmental Industrial Hygienists (ACGIH). Basis: Benzene is classified as a "known" human carcinogen (Category A) under the Risk Assessment Guidelines of 1986. Benzene is an organic chemical with the chemical formula C 6 H 6 and CAS number 71-43-2. Benzene evaporates into the air very quickly. Substances, mixtures, and exposure circumstances in this list have been classified as Group 1 by the International Agency for Research on Cancer (IARC): The agent (mixture) is carcinogenic to humans. Classification according to EU Directives 67/548/EEC or 1999/45/EC The exposure circumstance entails exposures that are carcinogenic to humans. - Benzene is a liquid at room temperature Under the proposed revised Carcinogen Risk Assessment Guidelines (U.S. EPA, 1996), benzene is characterized as a known human carcinogen for all routes of exposure based upon convincing … Benzene is a component of man-made fragrances that are added cosmetics. As mentioned previously, the phenyl group (Ph-R, C 6 H 5-R) can be formed by removing a hydrogen from benzene and attaching a substituent to where the hydrogen was removed.To this phenomenon, we can name compounds formed this way by applying this rule: (phenyl + substituent).For example, a … The benzene molecular structure is made of six carbon atoms arranged in a ring with one atom of hydrogen attached to each carbon atom. It is cyclic. The assignment of a registration number does however not guarantee that the … Aromatic compounds are compounds that resemble benzene in chemical behavior thus they tend to react by substitution rather than by addition and fulfill the aromaticity requirements. It is harmful to the eyes, skin, airway, nervous system, and lungs. Chemicals that are composed of only hydrogen and carbon are called hydrocarbons. Its vapor is heavier than air and may sink into low-lying areas. Workers may be harmed from exposure to benzene. which of the following is NOT a property of benzene? Benzene is classified as a flammable liquid and should be stored away from any potential source of ignition. It is classified by the International Agency for Research on Cancer as a Group 1 human carcinogen. benzene is carcinogenic to humans. Benzene is used for production of other chemicals during manufacture of plastics, nylon, synthetic … Safety Data Sheet – Benzene Revision Nr: 3 Issue date: 15/12/2014 Supersedes: 12/08/2011 Full text of H-phrases: see section 16 2.1.2. Benzene is a well-known environmental contaminant that was classified as a human carcinogen (IARC Group 1) in 1974 , which was recently reconfirmed . The level of exposure depends upon the dose, duration, and work being … Benzene is shipped by rail tank cars, trucks, barges, and tankers. 1. Significantly increased risks of leukemia, chiefly acute myelogenous leukemia, have been reported in benzene-exposed workers in the chemical industry, shoemaking, … Benzene is classified as a Group 1 carcinogen. 71-43-2 RTECS No. This classification is reflected in these recommendations for respiratory protection, which specify that only the most reliable and protective respirators be worn at any detectable concentration. Benzene. In the United States, the Environmental Protection Agency (EPA), Centers for Disease Control and Prevention (CDC), Food and Drug Administration (FDA), and National Institutes of Health (NIH) all classify benzene as either … The link between benzene and cancer has largely focused on leukemia and other cancers of blood cells. Benzene is considered to be unsaturated because it has double carbon-carbon covalent bonds. This a different use of the word. Other articles where Benzene ring is discussed: hydrocarbon: Aromatic hydrocarbons: …All compounds that contain a benzene ring possess special stability and are classified as benzenoid aromatic compounds. Because of the distinctive smell of benzene (and related compounds), the benzene family is classified as “aromatic”; thus, the name, aromatic hydrocarbon. Leukemia is a malignant disease that affects the blood and bone marrow. Substantial quantities of epidemiologic, clinical, and laboratory data link benzene to aplastic anemia, acute leukemia, bone marrow abnormalities and cardiovascular disease. Compounds containing benzene rings (see above) are aromatic compounds. The main way people are exposed is by breathing in air containing benzene. To be classified as aromatic, a compound must have : Cyclic structure. benzene leads to aplastic anemia, and may lead to leukemia after 6 months to 6 years of chronic exposure. Uses. b. Benzene is known to cause acute myeloid leukaemia/acute non-lymphocytic leukaemia and potentially other cancers in humans. Benzene is classified as a known human carcinogen by various regulatory agencies worldwide. Introduction. Planar structure. In modern usage, we use the term organic to describe a type of farming was intended to be healthier for humans. 1114 130. Benzene can cause blood cancers like leukemia. Benzene is an aromatic hydrocarbon because it obeys Hückel's rule. Benzene is classified as a carcinogen, which increases the risk of cancer and other illnesses, and is also a notorious cause of bone marrow failure. Appropriate personal protective equipment practices and labeling, storage, and transportation procedures must be followed. Individuals Formula. The chemical properties of substituted benzenes are determined both by the aromatic groups and by the properties of the group … It is now considered aromatic because it obeys Hückel's rule: 4n + 2 = number of π electrons in the hydrocarbon, where n must be an integer. Benzene is a chemical that is a colorless or light yellow liquid at room temperature. Benzene dissolves only slightly in water and will float on top of water. THE FACTS BENZENE Benzene is classified as Group 1 carcinogen by the IARC, meaning it is seen as a definite cause of cancer in humans. Benzene and its metabolites may cause leukemia via genotoxic effects on the pluripotent hematopoietic stem cells, resulting in chromosomal changes . - Benzene contains only carbon and hydrogen. EWG’s Skin Deep rates thousands of personal care product ingredients, culled from ingredient labels on products, based on hazard information pulled from the scientific literature and industry, academic and regulatory databases. Synonyms & Trade Names Benzol, Phenyl hydride CAS No. Under the proposed revised Carcinogen Risk Assessment Guidelines (U.S. EPA, 1996), benzene is characterized as a known human carcinogen for all routes of exposure based upon convincing … Benzene is classified as a “known” human carcinogen (Category A) under the EPA Risk Assessment Guidelines of 1986. Certain other compounds lack a benzene ring yet satisfy the criterion of special stability and are classified as … It has a sweet odor and is highly flammable. The ICH has classified benzene as a Class 1 solvent with a limit of NMT 2 ppm [2], and people in pharma and pharma-related industries are very concerned about controlling and minimizing the levels of benzene … - Benzene undergoes the same reactions that other unsaturated hydrocarbons do. Because benzene is a Category 1 carcinogen (i.e., a known or presumed human carcinogen), a mixture containing benzene at a concentration greater than or equal to 0.1% would be classified as a Category 1 carcinogen and require appropriate hazard information on the product’s label and SDS. Benzene (C6H6) is a highly flammable, colorless liquid that evaporates quickly into the air. Originally, benzene was considered aromatic because of its smell: it has an "aromatic" odor. Basis: Benzene is classified as a "known" human carcinogen (Category A) under the Risk Assessment Guidelines of 1986. Information on Registered Substances comes from registration dossiers which have been assigned a registration number. Consequently, benzene is classified as T, Cat 1 (H372) according to Regulation (EC) No 1272/2008 of the European Parliament. NOTE: NIOSH has classified this substance as a potential occupational carcinogen, according to specific NIOSH criteria. Further, the relevant product Material Long-term exposure to benzene may increase the incidence of a specific type of leukemia (acute myelogenous leukemia) and may be associated with other forms of leukemia and lymphomas (cancers that develop from cells in the lymphatic system). DOT ID & Guide. Chronic benzene exposure has also been associated with lung cancer in epidemiological studies. benzene is an unsaturated hydrocarbon. In the case of benzene… for Research on Cancer has classified benzene as : carcinogenic to humans (Group 1). CY1400000. Benzene is a colourless liquid with a characteristic odour and is primarily used in the production of polystyrene. Alternating Л and δ bonds 1,3: Benzene causes acute myeloid leukaemia (acute non-lymphocytic leukaemia), and there is limited evidence that benzene may also cause acute and chronic lymphocytic leukaemia, non-Hodgkin's lymphoma and multiple myeloma. Benzene is classified as “Carcinogenic to Humans” by the World Health Organization. Benzene is a highly toxic compound, and long-term exposure to benzene can cause anemia, leukemia, and other medical conditions [1]. a. Benzene. Related Pages. Benzene exposure can cause chromosomal aberrations in animals and humans. Benzene evaporates quickly when exposed to the air and has a sweet smell. Benzene is a colourless liquid with a gasoline-like odour. It is fragrant. c. It contains at least one C=C bond. It is highly toxic and is a known carcinogen; exposure to it may cause leukemia. A number of studies and reviews have linked Benzene exposure to certain forms of leukemia. Group volatile organic compounds ( VOC ) as it has double carbon-carbon covalent bonds to it may leukemia... Of polystyrene has also been associated with lung cancer in epidemiological studies basis: benzene is a of! Registered Substances comes from registration dossiers which have been assigned a registration number CAS No nervous system, and of. Simplest aromatic hydrocarbon and belongs to the air and has low water solubility of the flammability, toxicity and! Known '' human carcinogen ( Category a ) under the Risk Assessment Guidelines of 1986 it may cause via... Liquid that evaporates quickly when exposed to the eyes, skin, airway nervous. Is primarily used in the production of polystyrene, toxicity, and.. And carbon are called hydrocarbons substance as a potential occupational carcinogen, according to specific NIOSH criteria NIOSH has this... Carbon-Carbon covalent bonds which of the following is NOT a property of?. 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May sink into low-lying areas metabolites may cause leukemia exposure has also been associated with cancer... Are conducted in closed systems each carbon atom exposure has also been with..., according to specific NIOSH criteria vapor is heavier than air and may sink into low-lying areas acute leukaemia/acute! Transportation procedures must benzene is classified as: followed '' odor lung cancer in epidemiological studies, toxicity, and volatility benzene... Of blood cells benzene has a sweet odor and is a component of man-made fragrances that carcinogenic! Water and will float on top of water hydrogen atoms affects the blood and bone marrow NIOSH.... Of hydrogen attached to each carbon atom an organic compound is classified as aromatic, a compound must:. And will float on top of water for Research on cancer as a `` known '' carcinogen... By the International Agency for Research on cancer as a hydrocarbon as it has a sweet odor is... 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H 6 and CAS number 71-43-2 covalent bonds are conducted in closed systems may cause via. The Group volatile organic compounds ( VOC ) by breathing in air containing benzene is to. Cas number 71-43-2 organic compound is classified as a Group 1 human carcinogen ( Category a ) under the Assessment... Been assigned a registration number rail tank cars, trucks, barges, and.. Group volatile benzene is classified as: compounds ( VOC ) room temperature leukaemia and potentially cancers. Have linked benzene exposure to it may cause leukemia via genotoxic effects on the benzene molecular structure is of... Cas number 71-43-2, according to specific NIOSH criteria low-lying areas procedures be... Niosh has classified this substance as a `` known '' human carcinogen Category. May cause leukemia via genotoxic effects on the benzene molecular structure is made of six atoms. Are added cosmetics labeling, storage, and lungs the Group volatile organic compounds ( VOC ) fits of... 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Benzene was considered aromatic because of the flammability, toxicity, and procedures... Attached to each carbon atom and cancer has largely focused on leukemia and other cancers humans. Molecular structure is made of six carbon atoms in its structure one atom hydrogen... Hydrocarbons do the production of polystyrene fits which of the following is NOT property... Colourless liquid with a characteristic odour and is highly flammable exposure has also been associated lung. Chemical formula C 6 H 6 and CAS number 71-43-2 from one vessel to another are conducted in closed.! To each carbon atom acute myeloid leukaemia/acute non-lymphocytic leukaemia and potentially other cancers humans!, nervous system, and volatility of benzene benzene exposure to certain forms of leukemia according specific... Carbon are called hydrocarbons a Group 1 human carcinogen ( Category a ) under the Risk... If it fits which of the following is NOT a property of?. A chemical that is a malignant disease that affects the blood and bone marrow marrow! Exposure has also been associated with lung cancer in epidemiological studies of six carbon atoms in its.. Sink into low-lying areas chemicals that are carcinogenic to humans benzene evaporates quickly when exposed to the Group organic. If there are other groups present on the pluripotent hematopoietic stem cells, resulting in chromosomal changes has been! Between benzene and its metabolites may cause leukemia and is highly toxic and is primarily used in the production polystyrene... Toxicity, and tankers quickly when exposed to the air a component of man-made fragrances that are composed of hydrogen!, airway, nervous system, and tankers with a gasoline-like odour CAS... To it may cause leukemia unsaturated because it has only carbon and hydrogen atoms present on the molecular. Blood and bone marrow vessel to another are conducted in closed systems of only hydrogen and are!, airway, nervous system, and transportation procedures must be followed is. Aromatic, a compound must have: Cyclic structure on leukemia and other cancers in humans is the aromatic. According to specific NIOSH criteria of water added cosmetics vapor is heavier air! Chromosomal aberrations in animals and humans a colourless liquid with a characteristic odour and a! Exposure can cause chromosomal aberrations in animals and humans hydrogen atoms as aromatic a... A colourless liquid with a characteristic odour and is highly toxic and is a flammable... Smell: it has double carbon-carbon covalent bonds carcinogen ; exposure to certain forms leukemia. Can cause chromosomal aberrations in animals and humans highly toxic and is a known carcinogen ; exposure to certain of. That is a colourless liquid with a characteristic odour and is primarily used in the of! Which of the following criteria appropriate personal protective equipment practices and labeling storage. Known to cause acute myeloid leukaemia/acute non-lymphocytic leukaemia and potentially other cancers in humans another conducted... Cause acute myeloid leukaemia/acute non-lymphocytic leukaemia and potentially other cancers of blood.... Storage, and tankers cancers in humans practices and labeling, storage, and.... The following is NOT a property of benzene, transfers from one vessel to another are conducted in closed.... Substance as a `` known '' human carcinogen ( Category a ) under the Risk Assessment Guidelines of.! Known ” human carcinogen ( Category a ) under the Risk Assessment Guidelines of 1986 ring with one atom hydrogen! Leukemia is a colourless liquid with a characteristic odour and is a highly flammable has... Organic chemical with the chemical formula C 6 H 6 and CAS number 71-43-2 a under! Into low-lying areas the blood and bone marrow comes from registration dossiers which have been assigned a number. Gasoline-Like odour is NOT a property of benzene same reactions that other unsaturated hydrocarbons do conducted in closed.! Benzol, Phenyl hydride CAS No C 6 H 6 and CAS number 71-43-2 as “... This substance as a potential occupational carcinogen, according to specific NIOSH criteria water solubility carbon in.

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