9902.01.31-Amorphous silicon dioxide micro-spheres of mean particle

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Harmonized Tariff Schedule (2025 HTS Revision 32 (12/05/2025))

HTS Code	9902.01.31
Article Description	Amorphous silicon dioxide micro-spheres of mean particle size 0.003-0.018 mm, linseed oil absorption 30-40 ml/g, surface area less than 80 m²/g, and pore volume less than 0.1 ml/g (CAS No. 7631-86-9) (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 9902.01.31	Amorphous silicon dioxide micro-spheres of mean particle size 0.003-0.018 mm, linseed oil absorption 30-40 ml/g, surface area less than 80 m²/g, and pore volume less than 0.1 ml/g (CAS No. 7631-86-9) (provided for in subheading 2811.22.10)