Diethylzinc from Japan
Diethylzinc (ZnEt2) features zinc-carbon bonds characteristic of organo-inorganic compounds under 2931.90.90. Essential reagent for asymmetric synthesis and semiconductor production; pyrophoric nature requires specialized handling.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• UN3399 Organometallic substance packaging group I—stainless steel cylinders only
• Spontaneous ignition on water contact; emergency response plan mandatory for CBP
• Pharma intermediate—provide synthetic route documentation for DEA precursor review