HTS 9902.01.27
Dioxosilane (Silicon dioxide amorphous) (CAS No. 7631-86-9) entirely spherical micro-spheres of mean particle size of between 0.007 and 0.020 mm, uniform particle size with a uniformity coefficient of 1.65 or less, trace metal impurities less than 70 ppm, specific electrical resistance of 50,000 Ohm cm (provided for in subheading 2811.22.10)
Chapter 99
Current Duty Rates
Source: USITC Harmonized Tariff Schedule — Last updated April 8, 2026
Rates reflect current base duties plus applicable surcharges. Section 301 rates apply to China-origin goods. Verify with your customs broker for your specific classification.
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Frequently Asked
What is HTS 9902.01?
HTS 9902.01 covers dioxosilane (silicon dioxide amorphous) (cas no. 7631-86-9) entirely spherical micro-spheres of mean particle size of between 0.007 and 0.020 mm, uniform particle size with a uniformity coefficient of 1.65 or less, trace metal impurities less than 70 ppm, specific electrical resistance of 50,000 ohm cm (provided for in subheading 2811.22.10). It falls under Chapter 99 of the Harmonized Tariff Schedule of the United States.
What is the duty rate for HTS 9902.01.27?
The base (MFN) duty rate for HTS 9902.01.27 is Free. Special preferential rates may apply: No change.
Are there any exclusions for HTS 9902.01.27?
Exclusions may apply depending on active Section 301 or Section 232 exclusion lists. Check the USTR exclusion portal or use TariffDesk to monitor this code for changes, including new exclusions.
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