butyl carbitol acetate butyl carbitolâ„¢ acetate solvent is a high boiling, slow evaporating ester solvent that provides a good balance of volatility, solvency and water solubility. This solvent provides excellent film formation and formulation stability for coatings, and its mild, nonresidual odor makes it ideal for use in interior latex products. cas no. 124-17-4 chemical formula :