Hydrocarbon fuel oil for use in fuel cell system

摘要

Hydrocarbon fuel oil with paraffins as the main constituent for use in fuel cell systems is provided having (1) paraffins of less than 13 carbons constitute not less than 60% by mass; (2) isoparaffins of 15 or more carbons constitute from 0.01 to 9% by mass; and (3) normal paraffins of 13 or more carbons constitute not more than 2% by mass. Also, in addition to the aforementioned compositions (1) to (3), it is preferable if isoparaffins of 17 or more carbons constitute not more than 3% by mass.