2931.90.90.10/Polydimethylsiloxane (Low Molecular Weight)/Japan

Polydimethylsiloxane (Low Molecular Weight) from Japan

Low molecular weight polydimethylsiloxane (PDMS) oligomers with defined chain lengths are classified as organo-silicon compounds. Under HTS 2931.90.90.10 when chemically defined and not meeting polymer exclusions, distinguished from Chapter 39 silicones.

Duty Rate — Japan → United States

3.7%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Provide molecular weight distribution and degree of polymerization data to prove chemical definition vs polymer status

• Reference Chapter 29 note (a) for impurities tolerance; >90% purity typically qualifies

Polydimethylsiloxane (Low Molecular Weight) from Japan — Import Duty Rate | HTS 2931.90.90.10