Adipic Acid
Hexanedioic Acid
- CAS
- 124-04-9
- EC
- 204-673-3
- Sectors
- Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers
Adipic Acid (CAS 124-04-9) is an industrial dicarboxylic acid that appears as a white, odorless crystalline solid or powder, and serves as a monomer in nylon 6,6 synthesis and as an intermediate for polyamides, polyester polyols, plasticizers and specialty coatings. It serves as one of the most important monomers in polymer chemistry, especially in nylon 6,6 synthesis. Owing to its consistent purity, low moisture absorption, and good handling stability, it is also favored as an intermediate for high-performance materials.
Typical Properties
| Molecular formula | C6H10O4 |
|---|---|
| Molecular weight | 146.14 g/mol |
| Appearance | Adipic acid is a combustible, white, crystalline solid or powder. Odorless. |
| Form | Solid |
| Color | White |
| Odor | wh. monoclinic prisms, pract. odorless |
| Melting point | 152 °C |
| Boiling point | 338 °C |
| Density | 1.360 g/cm³ @ Temp: 25 °C |
| Water solubility | 1.44 g/100 mL (15 °C) |
| Flash point | 385 °F |
| pH | 2.7 (23g/l, H2O, 25°C) |
| GHS signal word | Danger · Corrosive, Irritant / harmful, Health hazard |
| HS code | 29171210 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Adipic Acid
Applications
Used in the production of polyamides, polyester polyols, and plasticizers, adipic acid also acts as a pH regulator and buffering component in industrial formulations. It plays a role in controlled-release systems and specialty coatings where acid functionality supports crosslinking or adhesion.
Safety & Risks
Mildly irritating to eyes and skin in dust form. Handle in well-ventilated areas and avoid static accumulation. Store away from bases and oxidizers.
Packaging
Supplied as prills or crystalline powder in 25 kg bags or FIBCs; maintain cool, dry conditions to prevent caking.