| 摘要 |
<p>A gas oil base material which consists of a hydrocarbon fraction obtained by hydrotreating a raw material oil in the presence of hydrogen, wherein the raw material oil contains oxygen -containing hydrocarbons resulting from an animal or vegetable oil, aliphatic hydrocarbons, and sulfur-containing hydrocarbons. Further, the gas oil base material is characterized in that the n-paraffin content is 90mass% or above and that the average of (Bn-1/An) values in the range of 10=n=20 is 0.30 or above, wherein An is total content (unit: mass%) of paraffins having n carbon atoms in the hydrocarbon fraction; Bn-1 is total content (unit: mass%) of paraffins having (n-1) carbon atoms therein; and (Bn-1/An) is a ratio of Bn-1 to An, with the proviso that n (which represents the number of carbon atoms) is a prescribed even number satisfying the relationship: 10 = n = 20.</p> |
