Adipic Acid
CAS Number: 124-04-9
Adipic acid (AA) is a linear aliphatic dicarboxylic acid and the primary co-monomer with hexamethylene diamine for nylon 66 synthesis. It is also a key monomer for polyurethane polyester polyols, plasticizers (dioctyl adipate), and low-temperature performance polyesters. Adipic acid imparts flexibility and hydrolytic stability to polyester chains.
Technical Specifications
| appearance | White crystalline powder or granules |
| purity (%) | ≥99.7 |
| color (APHA) | ≤10 |
| water content (%) | ≤0.1 |
| melting point (°C) | 152–154 |
Applications
- Nylon 66 polyamide fiber and engineering plastic synthesis
- Polyester polyol for flexible polyurethane foam and coatings
- Dioctyl adipate (DOA) and diisononyl adipate (DINA) plasticizer production
- Polyurethane adhesive and sealant chain extender
- Low-molecular-weight polyester resin for PVC plasticizer blends
Key Features
- High purity with low dibasic acid impurities ensures consistent nylon 66 polymerization kinetics
- C6 aliphatic chain provides excellent balance of flexibility and hydrolytic stability in polyesters
- Low color grade suitable for optical and light-colored nylon and polyurethane products
- Granule form reduces dust and facilitates accurate weighing and pneumatic conveying
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CAS Number
124-04-9
Category
Polymer Synthesis ChemicalsAvailability
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