Bis(cyclopentadienyl)zirconium Dichloride from Mexico
Zirconocene dichloride (Cp2ZrCl2) is a metallocene polymerization catalyst with Zr-C bonds, classified 2931.90.90 as other organo-inorganic compounds. Chapter note III(A) confirms classification with organic component in latest numerical heading.
Duty Rate — Mexico → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Air/moisture-sensitive; requires Schlenk flask packaging with desiccant documentation
• Commonly misclassified as 2827 zirconium chlorides—insist on metallocene organometallic status
• Olefin catalyst end-use letter supports correct 2931 classification