2931.90.90/Dimethylcadmium/China

Dimethylcadmium from China

Dimethylcadmium ((CH3)2Cd) is a pyrophoric organocadmium reagent with Cd-C bonds, used in semiconductor synthesis. Classified 2931.90.90 per chapter notes defining organo-inorganic metal-carbon compounds; excluded from Ch28 inorganics.

Duty Rate — China → United States

28.7%

Rate breakdown

9903.88.0425%Except as provided in headings 9903.88.33, 9903.88.34, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(g) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(g)

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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Import Tips

• UN3483 Pyrophoric liquid packaging group I—requires Type 1A1 steel drums with nitrogen padding

• Extremely toxic cadmium compound; OSHA PEL 0.005 mg/m³ exposure documentation required

• Customs may require end-user certificate due to semiconductor dual-use concerns