2-n-Octyl-4-isothiazolin-3-one (OIT) from Mexico
An isothiazolinone biocide with n-octyl substituent on thiazole ring, explicitly named in HTS 2934.10.70.00. Used in paints, coatings, and wood preservatives as antimicrobial agent. Qualifies as chemically defined heterocyclic compound under Chapter 29.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include CAS registry number (26530-20-1) and structural formula in commercial invoice for verification
• Declare EPA registration status if for pesticide use to facilitate customs and regulatory clearance
• Avoid anti-dusting agents that render product suitable for specific end-use per Chapter 29 note (g)