Methylacetylene Gas from Japan
Methylacetylene (propyne) gas used in welding torches and chemical synthesis, petroleum-derived and gaseous. Under HTS 2711.29.00 as other gaseous hydrocarbons, not fitting olefin specifics or light oils. Flammable per safety regs.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• UN 1004 hazmat declaration mandatory
• Purity docs to distinguish from mixtures
• Stabilized to prevent polymerization