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Federal Register #2026-17769

Amended Scope Ruling for Ammonium Sulfate from China – Exclusion of Enriched 15N Isotope

Buyer

International Trade Administration, Department of Commerce

Posted

September 01, 2026

Identifier

2026-17769

This notice from the International Trade Administration (ITA) of the Department of Commerce announces an amended scope ruling for antidumping and countervailing duty orders on Ammonium Sulfate from China. - The amendment follows a final judgment by the U.S. Court of International Trade. - Enriched 15N ammonium sulfate isotope is now officially excluded from the scope of these orders. - Cambridge Isotope Laboratories, Inc. is the only OEM specifically mentioned, as their product (enriched 15N ammonium sulfate isotope) is affected by this change. - The update impacts liquidation and cash deposit rates for entries of enriched 15N ammonium sulfate isotope. - No products or services are being procured; this is an administrative update regarding trade enforcement. - No purchase quantities, line items, or contract values are specified.

Description

The U.S. Court of International Trade issued a final judgment sustaining the Department of Commerce's remand redetermination regarding the scope ruling for antidumping and countervailing duty orders on Ammonium Sulfate from the People's Republic of China. The ruling found that enriched 15N ammonium sulfate isotope is outside the scope of the orders. Commerce is amending the scope ruling accordingly and notifying the public of this change. The decision affects the liquidation and cash deposit rates for the enriched 15N ammonium sulfate isotope entries.

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