| abstract |
(57) [Summary] PROBLEM TO BE SOLVED: To provide a fuel gas for a combustion-powered tool, particularly for a driving device for a fixed element, not only for leakage, Providing fuel gas that can be reliably detected as a warning to the manufacturer and does not harm the user. SOLUTION: A fuel gas based on a combustible gas, which contains in its constituents an aromatic substance or a mixture of aromatic substances. |