Ms. Dina Maria Donnelly
Director of International Transportation
Aceto Corporation
One Hollow Lane
Lake Success, New York 11042

RE: Tariff classification of maleic acid-acrylic acid copolymer (CAS-29132-58-9) from China

Dear Ms. Donnelly:

In your letter dated September 16, 2009 you requested a tariff classification ruling.

The product is described as maleic acid-acrylic acid copolymer (CAS-29132-58-9). In response to our request for additional information, you advised that no single comonomer predominates by weight in the copolymer.

The applicable subheading for maleic acid-acrylic acid copolymer (CAS-29132-58-9) will be 3911.90.4500, Harmonized Tariff Schedule of the United States (HTSUS), which provides for: Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in Note 3 to this chapter, not elsewhere specified and included, in primary forms: Other: Other: Containing monomer units which are aromatic or modified, or which are obtained, derived or manufactures in whole or in part therefrom: Thermosetting: Other. The rate of duty will be 5.8%, ad valorem.

This merchandise may be subject to the requirements of the Toxic Substances Control Act (TSCA), which are administered by the U. S. Environmental Protection Agency. Information on the TSCA can be obtained by contacting the EPA at 1200 Pennsylvania Avenue, N.W., Washington, D.C. 20460, by calling the TSCA Assistance Line at (202) 554-1404 (hours of service: 8:30 a.m.-5:00 pm EST Monday-Friday), by Fax at (202) 554-5603 (available 24 hours a day), by e-mail to: [email protected] or by visiting their website at

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

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 Frank Cantone at (646) 733-3038.


Robert B. Swierupski
National Commodity Specialist Division