Isobutyl palmitate

Isobutyl Palmitate (CAS 110-34-9) is a fatty acid ester produced by reacting palmitic acid with isobutanol, also known commercially as Kessco IBP and by the synonym Isobutyl Hexadecanoate. It carries no assigned E-code and is classified under HS code 2915.70.0150. It belongs to the ester category within oils, fats, and waxes.

In personal care formulations, Isobutyl Palmitate functions as an emollient carrier and skin-conditioning agent, reducing the greasy feel of heavier oils by lowering surface tension and improving spreadability. In pharmaceutical topical preparations, it acts as a plasticizer and solvent, enhancing active ingredient penetration and film flexibility in transdermal and semi-solid systems.

Isobutyl Palmitate is supplied as a cosmetic-grade clear liquid and is subject to REACH registration requirements within the EU. Suppliers typically offer it in drums and intermediate bulk containers. Procurement teams should confirm compliance with relevant regional cosmetic regulations and request a current safety data sheet prior to ordering.