Octadecenedioic acid

Octadecenedioic acid (CAS 20701-68-2) is a long-chain unsaturated dicarboxylic acid derived from oleic acid, offering a bio-based alternative to conventional diacids in specialty chemical formulations.

Its C18 monounsaturated backbone delivers a balance of reactivity and hydrophobicity that synthetic shorter-chain diacids cannot replicate. In personal care, it functions as a rheology modifier in anhydrous systems.

It contributes to skin-feel optimization in emollient-rich formulations such as lip products and skin conditioners. Coatings formulators use it as a reactive building block in alkyd and polyester resins.

The unsaturated chain improves film flexibility and substrate adhesion. In adhesives and sealants, it serves as a co-monomer or chain extender to tune the mechanical properties of polyamide and polyester-based systems.

Polymer producers incorporate it into specialty polyesters and polyamides targeting low-melting-point performance. It is also used for surface wetting control and improved compatibility with fatty-acid-derived raw material streams.

Octadecenedioic acid is typically supplied as a pale solid or waxy powder. Technical and specialty grades are the most common commercial forms, with purity specifications generally ranging from 90% to 98%+.

Packaging is available in kilogram-scale bags through to bulk quantities depending on supplier. This versatile diacid meets rigorous industrial requirements for high-performance bio-based chemical manufacturing.