Note that this listing is for five-gallon pails of product. For highways, airports, streets, and curbs, this concrete curing compound features white pigment to deflect the sun’s rays for a cooler surface while encouraging water retention. Do not overwork and do not thin down for application. Dry in approximately two hours; avoid foot traffic for four hours. Complies with ASTM C 309, Type 2, Class A, and AASHTO M 148, Type 2, Class A. FAA Spec. Item P-610-2.11 (e). Complies with all current federal, state, and local maximum allowable VOC requirements, including U.S. EPA, LADCO, SCAQMD, and OTC. Shop curing compound in more sizes at 95TSS.