Heading 28.11
US HTSOther inorganic acids and other inorganic oxygen compounds of nonmetals
6 subheadings · 12 tariff lines
Code / DescriptionMFN Rate
2811.11.00Hydrogen fluoride (Hydrofluoric acid)
Free2811.12Hydrogen cyanide1 line
Code / DescriptionMFN Rate
2811.12.00Hydrogen cyanide
4.2%2811.19Other3 lines
2811.21Carbon dioxide1 line
Code / DescriptionMFN Rate
2811.21.00Carbon dioxide
3.7%2811.22Silicon dioxide2 lines
Code / DescriptionMFN Rate
2811.22.10Synthetic silica gel
3.7%2811.22.50Silicon dioxide, other than synthetic silica gel
FreeSource: US International Trade Commission (USITC). For informational purposes only. Consult the official HTS and a licensed customs broker for binding rates.