3,5,5-Trimethylhexanoic acid

3,5,5-Trimethylhexanoic acid (CAS 3302-10-1), also marketed as Isononanoic acid and KYOWANOIC N, is a branched-chain fatty acid used as a chemical building block across coatings, lubricants, and polymer systems. Its branched structure drives performance in ester synthesis, where linear alternatives fall short on solubility or low-temperature behavior. In lubricant formulations, it is esterified to produce synthetic base fluids.

These functional additives deliver effective lubrication under high-load or wide-temperature conditions. Coatings manufacturers use it to synthesize alkyd resins and metallic driers for industrial applications. The branched chain improves drying performance and film flexibility in various surface treatments. The plastics and polymer industry relies on it as a precursor to plasticizer esters for durability.

This is particularly useful where low volatility and compatibility with PVC or elastomers are required. It also functions as a corrosion inhibitor component in metalworking fluids and automotive system additives. 3,5,5-Trimethylhexanoic acid is supplied as a clear liquid in drum and IBC quantities, with bulk tanker options available for larger industrial volumes. Technical grade is the standard commercial specification.

This grade is ideal for industrial synthesis applications. Purity levels are typically 98% or higher, with documentation to support use in regulated downstream formulations and chemical manufacturing processes.