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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 ...
There are three structural isomers: 1,2-dihydroxybenzene (the ortho isomer) is commonly known as catechol, 1,3-dihydroxybenzene (the meta isomer) is commonly known as resorcinol, and 1,4-dihydroxybenzene (the para isomer) is commonly known as hydroquinone.
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]
Argan oil also contains traces of tocopherols (vitamin E), phenols, carotenes, squalene. [5] Some trace phenols in argan oil include caffeic acid, oleuropein, vanillic acid, tyrosol, catechol, resorcinol, (−)-epicatechin and (+)-catechin. [6] Depending on the extraction method, argan oil may be more resistant to oxidation than olive oil. [7]
An essential oil is a concentrated hydrophobic liquid containing volatile (easily evaporated at normal temperatures) chemical compounds from plants.Essential oils are also known as volatile oils, ethereal oils, aetheroleum, or simply as the oil of the plant from which they were extracted, such as oil of clove.
An ancient oil plant, Camelina sativa, has recently gained popularity because of its high omega-3 content (30–45%), and it has been added to some margarines. Hemp oil contains about 20% ALA. Small amounts of ALA are found in vegetable oils such as soybean oil (7.8%) and canola oil (9.2%). [51] Omega-6 fatty acids
Left: The 1,4-benzodiazepine ring system. Right: 5-phenyl-1H-benzo[e] [1,4]diazepin-2(3H)-one forms the skeleton of many of the most common benzodiazepine pharmaceuticals, such as diazepam (7-chloro-1-methyl substituted). A pharmacophore model of the benzodiazepine binding site on the GABA A receptor. [196]
The World production of vegetable oil seed is forecast to be 418 million tonnes in 2008/09. After pressing this will make 131 million tonnes of vegetable oil. [22] Much of this is from Oil Palm, and palm oil production is growing at 5% per year. At about 7.5 lb/USgal (900 g/L) this is about 38 billion USgallons (144 billion L).