2926.90.50.50/Fumaronitrile/Japan

Fumaronitrile from Japan

Fumaronitrile (NC-CH=CH-CN) is a trans-dicyanoethylene used in Diels-Alder reactions and dyes. HTS 2926.90.5050 for unsaturated nitrile-function compounds under Chapter 29 definitions. Highly electron-deficient dienophile.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Sublimation risk; use sealed containers with desiccants

• Trans isomer confirmation via IR spectroscopy

• Toxicity higher than mononitriles; enhanced PPE declarations