9902.01.28-Dioxosilane (Silicon dioxide amorphous) (CAS No. 7631-86-9)

Harmonized Tariff Schedule (2025 HTS Revision 25 (10/13/2025))

HTS Code	9902.01.28
Article Description	Dioxosilane (Silicon dioxide amorphous) (CAS No. 7631-86-9) presented in the form of entirely spherical micro-spheres, certified by the importer as having a mean particle size of between 0.046 and 0.054 mm, uniform particle size with a uniformity coefficient of 1.65 or less and specific electrical resistance of 50,000 Ohm cm or more (provided for in subheading 2811.22.10)
Quota of Quantity
Unit of Quantity	[]
Rates of Duty (1-General)	Free
Rates of Duty (1-Special)	No change
Rates of Duty (2-Cuba and North Korea)	No change
Footnotes	[{columns=[stat, units], marker=1, value=See chapter 99 statistical note 1., type=footnote}]
Additional Duty
Additional Duty(products of China)

Section XXII:	Special Classification Provisions; Temporary Legislation; Temporary Modifications Proclaimed pursuant to Trade Agreements Legislation; Additional Import Restrictions Proclaimed Pursuant to Section 22 of the Agricultural Adjustment Act, As Amended
Chapter 99	Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended
Subheading 9902.01.28	Dioxosilane (Silicon dioxide amorphous) (CAS No. 7631-86-9) presented in the form of entirely spherical micro-spheres, certified by the importer as having a mean particle size of between 0.046 and 0.054 mm, uniform particle size with a uniformity coefficient of 1.65 or less and specific electrical resistance of 50,000 Ohm cm or more (provided for in subheading 2811.22.10)