Tandom · Duty calculator
Add country and invoice value for the full duty stack — base + 301 + 232 + AD/CVD + fees.
HTS 2811.22.50.00 is the U.S. Harmonized Tariff Schedule classification for Other inorganic acids and other inorganic oxygen compounds of nonmetals, silicon dioxide, other. It's a 10-digit statistical line in Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes, Section VI: Products of the Chemical or Allied Industries, used by U.S. Customs and Border Protection to determine the duty rate at entry. No Chapter 99 tariff modifications (Section 301, Section 232, IEEPA) or AD/CVD orders currently flag this code in Tandom's catalog.
New to HTS codes? Read our guide on how HTS classification works →
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
The tariff classification of Scandium Oxide, Silicon Dioxide, and Silicon Monoxide from China
The tariff classification of silicon dioxide from Japan
The tariff classification of silicon dioxide from Japan
The tariff classification of synthetic amorphous silicon dioxide (CAS no. 7631-86-9) from Germany
The tariff classification of Precipitated Synthetic Amorphous Silicon Dioxide (CAS # 7631-86-9)
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 2811.22.50.00 is the U.S. Harmonized Tariff Schedule classification for Other inorganic acids and other inorganic oxygen compounds of nonmetals, silicon dioxide, other. It belongs to Chapter 28 of the HTSUS.
The general (Column 1) duty rate for HTS 2811.22.50.00 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
No active Chapter 99 tariff overlays (Section 301, Section 232, IEEPA reciprocal, etc.) currently flag HTS 2811.22.50.00 in Tandom's catalog. Use the calculator's date + origin inputs to confirm against any retroactive overlay you may be filing.
No active AD/CVD orders currently flag HTS 2811.22.50.00 in Tandom's catalog. Tandom monitors Federal Register notices daily; a flag will appear here within 24h of any new order's publication.
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