| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide kerosene capable of stably operating room heating equipment over a long term. <P>SOLUTION: What is provided is kerosene characterized in that it contains naphthenobenzenes in a proportion of 10% or lower in a hydrocarbon type analysis as determined by field ionization (FI) mass spectroscopy. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
