Hydroxyl aluminium bis(2-ethylhexanoate) is a chemical substance derived from 2-ethylhexanoic acid and aluminium(III). Nominally it is the coordination complex with the formula Al(OH)(O<sub>2</sub>CCHEt(CH<sub>2</sub>)<sub>3</sub>CH<sub>3</sub>)<sub>2</sub> where Et = ethyl. The composition is not a homogeneous compound. It is used as a thickening agent in various products, including in napalm. It is slightly hygroscopic.