This regulation establishes an exemption from the requirement of a tolerance for residues of xylenesulfonic acid, sodium salt (also known as sodium xylene sulfonate) (CAS Reg. No. 1300-72-7) when used as an inert ingredient in antimicrobial pesticide formulations applied to food-contact surfaces in public eating places, diary processing equipment, and food processing equipment and utensils at 500 parts per million (ppm) utensils. The firm Exponent on behalf of Ecolab Inc. 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 sodium xylene sulfonate.