Mixed C4 Acetylenes Petroleum Fraction from Japan
Mixed C4 acetylenes (1-butyne, 2-butyne, vinylacetylene) recovered from petroleum acetylene processes. HTS 2901.29.10 covers these unsaturated acyclic hydrocarbons with triple bonds derived from natural gas liquids. Used in vinylacetylene-based synthetic rubber intermediates.
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%
Import Tips
• Stabilizer package specification (typically 0.1% tertiary amine) mandatory
• Cylinder valve outlet compatibility testing required due to acetylenic corrosivity
• Explosion risk; specify max 50% concentration in solvent for safe transport