Import duty on Isotopes other than those of heading no. 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined (HS 2845)

Heading 2845 covers 5 tariff lines in LoadLoom's table; 5 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
2845.10	Heavy water (deuterium oxide)	Free	Free	Free with certificate
2845.20	Boron enriched in boron-10 and its compounds	Free	Free	Free with certificate
2845.30	Lithium enriched in lithium-6 and its compounds	Free	Free	Free with certificate
2845.40	Helium-3	Free	Free	Free with certificate
2845.90	Isotopes other than those of heading no. 2844, 2845.20, 2845.30 or 2845.40; compounds, inorganic or organic, of such isotopes, whether or not chemically defined	Free	Free	Free with certificate

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 28: Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes · Every chapter