Base
N2428562013-06-28New YorkClassification

The tariff classification of 4-Hydroxy-4’-isopropoxydiphenylsulfone, CAS No. 95235-30-6 and 4,4’-Dihydroxydiphenyl sulphone, CAS No. 80-09-1 from China

U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced

Cross-Source Intelligence

Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-01 · Updates monthly

Summary

The tariff classification of 4-Hydroxy-4’-isopropoxydiphenylsulfone, CAS No. 95235-30-6 and 4,4’-Dihydroxydiphenyl sulphone, CAS No. 80-09-1 from China

Ruling Text

N242856 June 28, 2013 CLA-2-29:OT:RR:NC:N2:239 CATEGORY: Classification TARIFF NO.: 2930.90.2900 Geraint C. Davies Chameleon Specialty Chemicals Ltd. PO Box 469 Manchester, United Kingdom M14 0DY RE: The tariff classification of 4-Hydroxy-4’-isopropoxydiphenylsulfone, CAS No. 95235-30-6 and 4,4’-Dihydroxydiphenyl sulphone, CAS No. 80-09-1 from China Dear Mr. Davies: In your letter dated June 6, 2013, you requested a tariff classification ruling. The subject compounds are 4-Hydroxy-4’-isopropoxydiphenylsulfone, also known as D-8; and 4,4’-Dihydroxydiphenyl sulphone, also known as 4,4’-Sulfonyldiphenol. Both compounds are aromatic organo-sulfur compounds. They are used as developers for thermal paper. The applicable subheading for 4-Hydroxy-4’-isopropoxydiphenylsulfone and 4,4'-Dihydroxydiphenyl sulphone will be 2930.90.2900, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Organo-sulfur compounds: Other: Aromatic: Other: Other. The rate of duty will be 6.5 percent ad valorem. In accordance with temporary modifications of the HTSUS established pursuant to trade legislation, the rate of duty for 4,4’-Dihydroxydiphenyl sulphone, if entered on or before December 31, 2015, will be free, under subheading 9902.01.00, HTSUS. Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on World Wide Web at http://www.usitc.gov/tata/hts/. This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If you have any questions regarding the ruling, contact National Import Specialist Laureen Tsang at (646) 733-3032. Sincerely, Thomas J. Russo Director National Commodity Specialist Division