2931.90.90/Methyllithium (15% in Diethyl Ether)/Japan

Methyllithium (15% in Diethyl Ether) from Japan

Methyllithium solution contains lithium-carbon bonds defining organolithium classification under 2931.90.90. Used as strong base/non-nucleophile in pharma synthesis; chapter note V(D) classifies metal alcoholates similarly.

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

• UN3393 solution packaging; ether stabilizer must be declared for flammability

• Nucleophilic reagent—DEA watches for diversion to clandestine synthesis

• Verify solvent content doesn't trigger Ch38 mixture classification