Butane Reference Fuel RM-1 from Japan
Certified reference butane (iso-butane/n-butane blend) for automotive engine testing per ASTM D1837. Pure hydrocarbon standard under HTS 2901.10.10.00. Supplied in pressure cylinders with NIST traceability.
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
• ASTM specification docs; octane rating certificate; specify test fuel use to avoid Chapter 27