Adipic Acid

Specifications :

Molecular formula C6H10O4
Molar mass 146.14 g mol1
Appearance White crystals
Odor odorless
Density 1.360 g/cm3
Melting point 152.1°C (305.8°F; 425.2 K)
Boiling point 337.5°C (639.5°F; 610.6 K)
Solubility in water 1.4 g/100 mL (10 °C)
2.4 g/100 mL (25 °C)
160 g/100 mL (100 °C)
Solubility very soluble in methanol, ethanol
soluble in acetone
slightly soluble in cyclohexane
negligible in benzene, petroleum ether
insoluble in acetic acid
log P 0.08
Vapor pressure 0.0728 Pa (18.5 °C)
Acidity (pKa) 4.43, 5.41
Viscosity 4.54 cP (160 °C)


1) Small but significant amounts of adipic acid are used as a food ingredient as a flavorant and gelling aid. It is used in some calcium carbonate antacids to make them tart.
2) It is used in making polyester polyols for polyurethane systems. Food grade adipic acid is used as gelling aid, acidulant, leavening and buffering agent.
3) Adipic acid has two carboxylic acid, -COOH, groups, which can yield two kinds of salts. Its derivatives, acyl halides, anhydrides, esters, amides and nitriles, are used in making target products such as flavoring agents, internal plasticizers, pesticides, dyes, textile treatment agents, fungicides, and pharmaceuticals through further reactions of substitution, catalytic reduction, metal hydride reduction, diborane reduction, keto formation with organometallic reagents, electrophile bonding at oxygen, and condensation.
4) It is useful in a variety of industrial applications which includes Plasticizer for polymers, Biodegradable solvents and lubricants, Engineering plastics, Epoxy curing agent, Adhesive and powder coating, Corrosion inhibitor, Perfumery and pharmaceutical, Electrolyte etc.