- Benzene is a liquid at room temperature Benzene is classified as a flammable liquid and should be stored away from any potential source of ignition. Chemicals that are composed of only hydrogen and carbon are called hydrocarbons. 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. 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. To be classified as aromatic, a compound must have : Cyclic structure. The level of exposure depends upon the dose, duration, and work being … Synonyms & Trade Names Benzol, Phenyl hydride CAS No. In the case of benzene… Benzene is a component of man-made fragrances that are added cosmetics. 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. 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. Benzene is classified as a Group 1 carcinogen. If there are other groups present on the benzene ring the compound is said to be a substituted benzene. The benzene molecular structure is made of six carbon atoms arranged in a ring with one atom of hydrogen attached to each carbon atom. Classification according to EU Directives 67/548/EEC or 1999/45/EC Further, the relevant product Material Benzene is a well-known environmental contaminant that was classified as a human carcinogen (IARC Group 1) in 1974 , which was recently reconfirmed . Benzene is used for production of other chemicals during manufacture of plastics, nylon, synthetic … The exposure circumstance entails exposures that are carcinogenic to humans. This a different use of the word. It is cyclic. Benzene is considered to be unsaturated because it has double carbon-carbon covalent bonds. Benzene is a chemical that is a colorless or light yellow liquid at room temperature. Because of the distinctive smell of benzene (and related compounds), the benzene family is classified as “aromatic”; thus, the name, aromatic hydrocarbon. The link between benzene and cancer has largely focused on leukemia and other cancers of blood cells. Benzene (C6H6) is a highly flammable, colorless liquid that evaporates quickly into the air. Benzene is a colourless liquid with a gasoline-like odour. Basis: Benzene is classified as a "known" human carcinogen (Category A) under the Risk Assessment Guidelines of 1986. 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 … 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. 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. Alternating Л and δ bonds Significantly increased risks of leukemia, chiefly acute myelogenous leukemia, have been reported in benzene-exposed workers in the chemical industry, shoemaking, … Benzene. Benzene is a colourless liquid with a characteristic odour and is primarily used in the production of polystyrene. The Phenyl Group. 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 exposure can cause chromosomal aberrations in animals and humans. Planar structure. Its vapor is heavier than air and may sink into low-lying areas. Originally, benzene was considered aromatic because of its smell: it has an "aromatic" odor. 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. 1. 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 … 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 … - Benzene undergoes the same reactions that other unsaturated hydrocarbons do. A number of studies and reviews have linked Benzene exposure to certain forms of leukemia. Benzene is shipped by rail tank cars, trucks, barges, and tankers. 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). benzene leads to aplastic anemia, and may lead to leukemia after 6 months to 6 years of chronic exposure. Workers may be harmed from exposure to benzene. Benzene is classified as a “known” human carcinogen (Category A) under the EPA Risk Assessment Guidelines of 1986. Benzene is known as an “aromatic hydrocarbon”. 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 … Compounds containing benzene rings (see above) are aromatic compounds. Formula. Benzene is classified as a known human carcinogen by various regulatory agencies worldwide. which of the following is NOT a property of benzene? 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. Information on Registered Substances comes from registration dossiers which have been assigned a registration number. Substantial quantities of epidemiologic, clinical, and laboratory data link benzene to aplastic anemia, acute leukemia, bone marrow abnormalities and cardiovascular disease. Benzene is an aromatic hydrocarbon because it obeys Hückel's rule. Appropriate personal protective equipment practices and labeling, storage, and transportation procedures must be followed. DOT ID & Guide. The assignment of a registration number does however not guarantee that the … CY1400000. 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