How much do you know about the properties and uses of adipic acid?

[alias] fatty acid, 1,4-butanedicarboxylic acid, butanedicarboxylic acid.

[Molecular formula]C6H10O4

[Structural formula]HOOC(CH2)4COOH

[Properties]White monoclinic prisms of adipic acid with the smell of burnt bones. Relative density 1.360 (25°C). Melting point 152°C, boiling point 337.5°C (decomposition), flash point (open cup) 209.85°C, ignition point 231.85°C, melt viscosity 4.54mPa·s (160°C). Slightly soluble in water and ether, easily soluble in boiling water, easily soluble in methanol and ethanol, soluble in acetone, insoluble in benzene and petroleum ether; the aqueous solution is acidic, the pH value of 0.1% adipic acid aqueous solution is 3.2, non-hygroscopic, Can burn. Occurs naturally in rancid beets. It has the generality of dibasic acids, and can be esterified to form monoester or diester. When heated to 300°C, it can be decarboxylated to generate cyclopentanone.

［Application］ Raw material for organic synthesis, fine chemical industry and manufacture of polymer materials, used for synthesis of diethyl adipate, adipate Esters such as dibutyl dioate and diisooctyl adipate are important raw materials for the manufacture of nylon 66 and polyurethane foam. It is also a raw material for synthetic medicine and spices. It is also used as a lubricant, a pH regulator and in the manufacture of plasticizers, pesticides and adhesives. In the food industry, it is used as a sour agent, buffer and flavor enhancer for beverages and fruit juices. Also used in the preparation of wine and processed cheese. It can be used in oil to improve the quality of oil. Used as a buffer to prevent browning of most fruits. Because of its low hygroscopicity, it can be used to make solid powder juice.

[Brief recipe]

①Cyclohexane is oxidized in air to obtain a mixture of cyclohexanone and cyclohexanol, and then oxidized with nitric acid to precipitate adipic acid crystals. Then refined to get the finished product;

②It is produced by hydrolysis of hexamethylenediamine.

[Safety and Protection]Packed in a woven bag lined with a plastic bag. Net weight 25kg: storage and transportation according to general chemical regulations.

This product has low toxicity, stable properties, and can be stored for a long time without getting damp.