Undecanedioic acid

Undecanedioic acid (CAS 1852-04-6), also known as hendecanedioic acid, is an eleven-carbon aliphatic dicarboxylic acid used as a bifunctional building block across polymer chemistry and industrial formulation.

Its two reactive carboxylic end groups make it a reliable monomer for synthesizing specialty polyamides, polyesters, and ester-based intermediates for various high-performance applications.

In coatings and adhesives, it serves as a chain extender or crosslinker to tune flexibility, adhesion, and film durability in polyester and polyamide resin systems used in demanding environments.

Lubricant formulators use it to produce diester and complex ester base fluids with improved thermal stability and low-temperature performance for high-specification metalworking and industrial oils.

Personal care manufacturers incorporate it into emollients and rheology modifiers, where its ester derivatives contribute to skin-feel, emulsion stability, and texture in premium creams and lotions.

In sealant and elastomer production, it functions as a reactive intermediate that adjusts chain length and mechanical properties in cured polymer networks to meet specific industrial requirements.

Undecanedioic acid is supplied as a white crystalline powder or flake. Technical grade is the standard commercial form, with purity levels typically at 98% or higher for most industrial uses.

High-purity grades are available for specialty polymer and personal care applications where tighter specifications are required to ensure the quality and consistency of the final chemical product.