Chapter 28 — Inorganic chemicals; compounds of precious metals, rare-earth metals or isotopes

Section VI: Products of the Chemical or Allied Industries.

How duties spread across this chapter

Of the 274 duty lines in this chapter that carry a percentage rate:

Free (0%)80

Over 0% – 5%166

Over 5% – 15%28

Over 15% – 35%0

Over 35%0

Counts come straight from HTS 2026HTSRev22. Lines charged by weight or piece are not in this chart — they are listed on each code page with their per-unit rate.

Code pages published in this chapter

2845.20.00.00 — Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined — Boron enriched in boron-10 and its compounds (regular duty Free)

We publish code pages in batches, starting with the codes importers actually get wrong. Any code can be checked in the duty calculator right away.