Ms. Robyn K. Brunciak
Interchem Corp
120 Route 17 North
Paramus, NJ 07652

RE: The tariff classification of Glutarimide from China

Dear Ms. Brunciak:

In your letter dated April 16, 2019 you requested a tariff classification ruling.

The subject product is a chemical intermediate called Glutarimide (CAS # 1121-89-7). It is also known as 2,6-Piperidinedione. You state that it will be imported in bulk form. It is both a nitrogen only heterocyclic chemical compound, and a polybasic cyclic imide.

HTSUS Chapter 29 Note 7 provides that:

"Headings 2932, 2933 and 2934 do not include epoxides with a three-membered ring, ketone peroxides, cyclic polymers of aldehydes or of thioaldehydes, anhydrides of polybasic carboxylic acids, cyclic esters of polyhydric alcohols or phenols with polybasic acids, or imides of polybasic acids."

As the instant chemical compound would be excluded from Heading 2933 based on that note, classification will be controlled by imide functional group present in the structure.

The applicable subheading for the Glutarimide (CAS # 1121-89-7) will be 2925.19.9100, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds: Imides and their derivatives; salts thereof: Other: Other: Other. The rate of duty will be 3.7 percent ad valorem.

Effective July 6, 2018, the Office of the United States Trade Representative (USTR) imposed an additional tariff on certain products of China classified in the subheadings enumerated in Section XXII, Chapter 99, Subchapter III U.S. Note 20(b), HTSUS. The USTR imposed additional tariffs, effective August 23, 2018, on products classified under the subheadings enumerated in Section XXII, Chapter 99, Subchapter III U.S. Note 20(d), HTSUS. Subsequently, the USTR imposed further tariffs, effective September 24, 2018, on products classified under the subheadings enumerated in Section XXII, Chapter 99, Subchapter III U.S. Note 20(f) and U.S. Note 20(g), HTSUS. For additional information, please see the relevant Federal Register notices dated June 20, 2018 (83 F.R. 28710), August 16, 2018 (83 F.R. 40823), and September 21, 2018 (83 F.R. 47974). Products of China that are provided for in subheading 9903.88.01, 9903.88.02, 9903.88.03, or 9903.88.04 and classified in one of the subheadings enumerated in U.S. Note 20(b), U.S. Note 20(d), U.S. Note 20(f) or U.S. Note 20(g) to subchapter III shall continue to be subject to antidumping, countervailing, or other duties, fees and charges that apply to such products, as well as to those imposed by the aforementioned Chapter 99 subheadings.

Products of China classified under subheading 2925.19.9100, HTSUS, unless specifically excluded, are subject to the additional 10 percent ad valorem rate of duty. At the time of importation, you must report the Chapter 99 subheading, i.e., 9903.88.03, in addition to subheading 2925.19.9100, HTSUS, listed above.

The tariff is subject to periodic amendment so you should exercise reasonable care in monitoring the status of goods covered by the Notice cited above and the applicable Chapter 99 subheading.

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 the 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 Paul Hodgkiss at


Steven A. Mack
National Commodity Specialist Division