Import duty on Petroleum resins, coumarone-indene resins, polyterpenes, polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39, in primary forms (HS 3911)

Heading 3911 covers 3 tariff lines in LoadLoom's table; 2 of them clear duty-free under USMCA for goods made in Canada, the US or Mexico. Published US and Canadian rates below, verified October 2026. Pick the line that matches your goods for the worked example and border steps.

HS code	Goods	US duty	Canada duty	USMCA
3911.10	Petroleum resins, coumarone, indene or coumarone-indene resins and polyterpenes; in primary forms	6.1%	Free	Free with certificate
3911.20	Petroleum resins, poly(1,3-phenylene methylphosphonate), in primary forms	6.5%	Free	Free with certificate
3911.90	Polysulphides, polysulphones and similar products of chemical synthesis n.e.c. in chapter 39; in primary forms	Free	Free	Not eligible

This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.

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Chapter 39: Plastics and articles thereof · Every chapter