Adipic acid CAS 124-04-9, also known as fatty acid, is an important organic binary acid with the structural formula HOOC (CH2) 4COOH. It can undergo salt formation reactions, esterification reactions, amidation reactions, etc., and can condense with diamines or alcohols to form polymer polymers. Adipic acid is a dicarboxylic acid with significant industrial significance, playing an important role in chemical production, organic synthesis industry, pharmaceuticals, lubricant manufacturing, and other fields. Its output ranks second among all dicarboxylic acids.

Chinese name: Adipic acid

Foreign name: Adipic acid

Nickname: Fatty Acid

Chemical formula: C6H10O4

Molecular weight: 146.141

CAS login number: 124-04-9

EINECS login number: 204-673-3

Melting point: 152 ℃

Boiling point: 330.5 ℃ (decomposition)

Water solubility: slightly soluble in water, easily soluble in ethanol

Density: 1.36 g/cm ³

Appearance: White crystal

Flash point: 385 ℉

Applications: chemical production, organic synthesis industry, pharmaceuticals, lubricants

Refractive index: 1.4283

Physical property

Physical state: White crystalline or crystalline powder

Odor: There is a smell of burnt bones

Flash point (open cup): 231.85 ℃

Melting viscosity: 4.54mPa · s (160 ℃)

Solubility: Easily soluble in most organic solvents such as alcohol and ether. Slightly soluble in water, the solubility of adipic acid in water varies greatly with temperature. When the solution temperature rises from 28 ℃ to 78 ℃, its solubility can increase by 20 times. The solubility at 15 ℃ is 1.44g/100mL; The solubility at 25 ℃ is 2.3g/100mL; The solubility at 100 ℃ is 160g/100mL.

Chemical property

Adipic acid has carboxylic groups as its functional groups, thus possessing carboxylic properties such as salt formation reactions, esterification reactions, amidation reactions, etc. As a dicarboxylic acid, it can also condense with diamines or alcohols to form polymer polymers.

Salinization reaction

Adipic acid is a typical acid with a pKa between 4.41 and 5.41. It can undergo salt forming reactions with general alkaline substances, indicating acidity.

Esterification

Adipic acid can undergo esterification reaction with alcohol under certain conditions.

Amide reaction

The carboxyl group in adipic acid can also undergo amide reaction with the amino group.

Polycondensation reaction

As a dicarboxylic acid, it can condense with diamines or alcohols to form polymer polymers

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