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1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula C 6 H 4 O 2. In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling that of chlorine, bleach, and hot plastic or formaldehyde. This six-membered ring compound is the oxidized derivative of 1,4-hydroquinone. [4]
Benzoquinone (C 6 H 4 O 2) is a quinone with a single benzene ring. There are 2 (out of 3 hypothetical) benzoquinones: There are 2 (out of 3 hypothetical) benzoquinones: 1,4-Benzoquinone , most commonly, right image (also para -benzoquinone, p -benzoquinone, para -quinone, or just quinone)
Oil additives are chemical compounds that improve the lubricant performance of base oil (or oil "base stock"). The manufacturer of many oils can use the same base stock for each formulation and can choose different additives for each use. Additives comprise up to 5% by weight of some oils. [1]
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The company announced in 2020 that its annual revenue in 2019 increased by 64.2 percent over the previous year, and totaled 7.15 trillion won ($5.9 billion). [28] Its operating loss in 2019 dropped from 1.13 trillion won to 720.5 billion won, declining 36 percent. [28]
Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C 6 H 4 (OH) 2. It has two hydroxyl groups bonded to a benzene ring in a para position. It is a white granular solid. Substituted derivatives of this parent compound are also ...
It is related to 1,4-benzoquinone by replacement of four H centres with methyl (Me) groups. The C 10 O 2 core of this molecule is planar with two pairs of C=O and C=C bonds. [1] The compound is produced via nitration of durene (1,2,4,5-tetramethylbenzene) followed reduction to the diamine and then oxidation. [2]
Tetrahydroxy-1,4-benzoquinone, also called tetrahydroxy-p-benzoquinone, tetrahydroxybenzoquinone, or tetrahydroxyquinone (THBQ, THQ), is an organic compound with formula C 6 O 2 (OH) 4. Its molecular structure consists of a cyclohexadiene ring with four hydroxyl groups and two ketone groups in opposite ( para ) positions.