Characteristics and Applications of Adipic Acid

Adipic acid, also known as Hexanedioic acid, is an important organic dicarboxylic acid with the chemical formula HOOC(CH₂)₄COOH and a molecular weight of 146.14. Douwin is a specialized adipic acid manufacturer, consistently adhering to the business philosophy of "quality first, customer foremost" continuously promoting technological innovation and product upgrades to provide customers with higher-quality products and services.

Physical Properties of Adipic Acid

Appearance

Adipic acid is a white crystalline or crystalline powder, odorless, with a mild acidic taste.

Melting Point

The adipic acid melting point is 152℃, which is relatively stable.

Boiling Point

330.5℃

Autoignition Temperature

420℃

Solubility

Highly soluble in boiling water, easily soluble in methanol and ethanol, soluble in acetone, slightly soluble in water and cyclohexane, sparingly soluble in ether, and insoluble in benzene and petroleum ether.

Chemical Properties of Adipic Acid

Adipic acid contains the carboxyl (-COOH) functional group, thus exhibiting the general chemical properties of carboxylic acids, such as salt formation reactions, esterification reactions, and amidation reactions.

It can undergo polycondensation with diamines or diols to form high molecular weight polymers, such as Nylon 66.

Adipic acid is acidic in aqueous solution, with pKa values between 4.41 and 5.41, and can undergo salt formation reactions with common basic substances.

Applications of Douwin's Adipic Acid

We are specialized adipic acid suppliers, which finds extensive applications in many fields, primarily including the following:

Polyurethane Coatings

Polyurethane coatings, which require the synthesis of adipic acid, include both two-component and one-component coatings. Two-component polyurethane coatings generally possess excellent mechanical properties, high solid content, and comprehensive performance, making them promising types of coatings.

Polyurethane Soles

Polyurethane soles are made primarily from polyurethane resin, along with various additives. Polyurethane soles consist of adipic acid, MDI, diethylene glycol, ethylene glycol, and additives, and are widely used in the footwear industry. They are used not only in sports shoes and hiking boots but also extensively in business and fashion shoes, as well as high-quality safety shoes.

Nylon 66

Nylon 66 is composed of adipic acid and hexamethylene diamine, typically used in products requiring high mechanical strength, good thermal stability, or chemical resistance. It is used in textiles, carpet fibers, molded parts, and airbag fibers.