2-n-Octyl-4-isothiazolin-3-one (OIT) from China
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 — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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)