HTS code 9902.10.85 covers "Mixtures of approximately 25 percent propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2, methyl polymers with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and reduced methyl esters of reduced polymerized, oxidized tetrafluoroethylene, compounds with trimethylamine (CAS No. 328389-91-9), less than 1 percent 2-propanol (CAS No. 67-63-0) and less than 1 percent 2-butanone (CAS No. 78-93-3), remaining content water (provided for in subheading 3904.69.50)" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.