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Modification of Two Ruling Letters and Revocation of Treatment Relating to the Tariff Classification of Two Hindered Amine Light Stabilizers

16 September 2026

In plain English

CBP is modifying two ruling letters and revoking related treatment on tariff classification of two hindered amine light stabilizers (CAS 70624-18-9 and 71878-19-8) under HTSUS, effective for entries on or after November 15, 2026.

Read the official notice
Topic
Customs operations
Regulator
CBP
Published
16 September 2026
For
Imports
Where it applies
United States
Source
CBP Customs Bulletin

From the notice

AGENCY: U.S. Customs and Border Protection, Department of Homeland Security. ACTION: Notice of modification of two ruling letters, and revocation of treatment relating to the tariff classification of two hindered amine light stabilizers. SUMMARY: Pursuant to section 625(c), Tariff Act of 1930 (19 U.S.C. § 1625(c)), as amended by section 623 of title VI (Customs Modernization) of the North American Free Trade Agreement Implementation Act (Pub. L. 103-182, 107 Stat. 2057), this notice advises interested parties that U.S. Customs and Border Protection (CBP) is modifying two ruling letters concerning tariff classification of two hindered amine light stabilizers (“HALS”), with Chemical Abstract Service (CAS) registry numbers (“CAS#”) 70624-18-9 and CAS#71878-19-8 under the Harmonized Tariff Schedule of the United States (HTSUS). Similarly, CBP is revoking any treatment previously accorded by CBP to substantially identical transactions. Notice of the proposed action was published in the Customs Bulletin, Vol. 60, No. 21, on July 29, 2026. No comments were received in response to that notice. EFFECTIVE DATE: This action is effective for merchandise entered or withdrawn from warehouse for consumption on or after November 15, 2026.
The full text is at the source

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