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Epichlorohydrin (abbreviated ECH) is an organochlorine compound and an epoxide. Despite its name, it is not a halohydrin . It is a colorless liquid with a pungent, garlic-like odor, moderately soluble in water, but miscible with most polar organic solvents . [ 4 ]
4,4'-Dihydroxybenzophenone - used as a UV stabilizer in cosmetics and plastics; Dinitrobisphenol A - a proposed metabolite of BPA, which may show increased endocrine disrupting character; HPTE - a metabolite of the synthetic insecticide methoxychlor; Others. 2,2,4,4-Tetramethyl-1,3-cyclobutanediol - next generation BPA replacement
The bisphenols (/ ˈ b ɪ s f ɪ n ɒ l /) are a group of industrial chemical compounds related to diphenylmethane; commonly used in the creation of plastics and epoxy resins. [1] [2] [3] Most are based on two hydroxyphenyl functional groups linked by a methylene bridge.
Bisphenol A diglycidyl ether slowly hydrolyzes to 2,2-bis[4(2,3-dihydroxypropoxy)phenyl)propane (bis-HPPP). Similarly, DGEBA reacts with acrylic acid to give vinyl ester resins . The reaction results in opening of the epoxide ring, generating unsaturated esters at each terminus of the molecule.
4-Isopropenylphenol is an organic compound with the formula CH 2 =(CH 3)CC 6 H 4 OH. The molecule consists of a 2-propenyl group (CH 2 = C -CH 3 ) affixed to the 4 position of phenol . The compound is an intermediate in the production of bisphenol A (BPA), 2.7 Mkg/y of which are produced annually (2007).
4-Isopropylphenol is an organic compound with the formula (CH 3) 2 CHC 6 H 4 OH. The molecule consists of an isopropyl group affixed to the para ( p -) position of phenol . The compound, a white solid, is produced by the alkylation of phenol with propylene and is relevant to the production of the commodity chemical bisphenol A (BPA).
Scientists have linked a lithium battery plant fire in California earlier this month to a surge in heavy metals found in nearby soil.
The industrial synthesis of 4,4′-biphenol was developed by Allan Hay in the 1960s. [2] [3] As the direct oxidative coupling of phenol gives a mixture of isomers, [4] [5] 4,4′-biphenol is instead prepared from 2,6-di-tert-butylphenol, where para-coupling is the only possibility. [3]