Difenzoquat Methyl Sulfate Technical Grade from China
Pure 1,2-dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate, a quaternary ammonium salt used as the active ingredient in herbicides for wild oat control in cereals. This chemically defined heterocyclic compound with a pyrazole ring falls under HTS 2933.19.15.00 as an aromatic pyrazolium compound. It's imported as technical material for formulation into agricultural pesticides.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Obtain EPA registration and provide pesticide import documentation including product label and safety data sheets
• Ensure chemical purity certification meets 95% minimum for technical grade to avoid reclassification as mixture
• Declare exact CAS number (43222-48-0) and pyrazole content on commercial invoice to prevent customs disputes