This regulation establishes exemptions from the requirement of a tolerance for residues of n-butyl benzoate (CAS Reg. No. 136-60-7) when used as an inert ingredient (solvent) in pesticide formulations applied to growing crops, raw agricultural commodities after harvest, and animals and when used as an inert ingredient in antimicrobial formulations in food-contact surface sanitizer products at a maximum level in the end-use concentration of 15,000 parts per million (ppm). Exponent, Inc., on behalf Huntsman Corp., submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of n-butyl benzoate.