Глутаровая кислота химические свойства, назначение, производство
Химические свойства
white or off-white crystals, usually containing 1mol crystal water. Soluble in water, alcohol, ether and chloroform, slightly soluble in petroleum ether.
Вхождение
Glutaric acid occurs in washings from fleece and, together with malonic acid, in the juice of unripened sugar beet.
Использование
Glutaric acid is used as the raw material for organic synthesis, pharmaceutical intermediate and synthetic resin. It serves as a precursor in the production of polyester polyols, polyamides, ester plasticizers and corrosion inhibitors. It is useful to decrease polymer elasticity and in the synthesis surfactants and metal finishing compounds. It acts as an intermediate during the catabolism of lysine in mammals.
Подготовка
glutaric acid is produced as a by-product of the production process of adipic acid (about 2% of the output of an adipic acid plant is glutaric); Glutaric acid can be produced through various chemical routes, for example, from cyclopentane by oxidation with molecular oxygen and cobalt (III) catalysts or by ozonolysis; and from cyclopentanol–cyclopentanone by oxidation with oxygen and Co(CH3CO2)2, with potassium peroxide in benzene, or with N2O4 or nitric acid. Together with succinic acid, glutaric acid is formed as a by-product during oxidation of cyclohexanol–cyclohexanone in the adipic acid production process.
прикладной
The applications of glutaric acid, e.g., as an intermediate, are limited. Its use as a starting material in the manufacture of maleic acid has no commercial importance. it does not usually reach the market because it is converted into dibasic esters and sold as environmentally friendly solvents.
Определение
ChEBI: glutaric acid is an alpha,omega-dicarboxylic acid that is a linear five-carbon dicarboxylic acid. It has a role as a human metabolite and a Daphnia magna metabolite. It is an alpha,omega-dicarboxylic acid and a dicarboxylic fatty acid. It is a conjugate acid of a glutarate(1-) and a glutarate.
Общее описание
Glutaric acid appears as colorless crystals or white solid. (NTP, 1992)
Реакции воздуха и воды
Water soluble.
Пожароопасность
Flash point data for 1,5-Pentanedioic acid are not available; however, 1,5-Pentanedioic acid is probably combustible.
Методы очистки
Crystallise the acid from *benzene, CHCl3, distilled water or *benzene containing 10% (w/w) of diethyl ether. Dry it under vacuum. [Beilstein 2 IV 1934.]
Глутаровая кислота препаратная продукция и сырье
сырьё
препарат