| 摘要 |
<p>A thermogenic composition comprising (1) at least one of alkali metal sulphides, polysulphides and hydrates thereof, (2) at least one of carbonaceous materials, (3) at least one of powdered iron, magnesium, aluminum and powdered alloys of these metals and, if desired, calcium oxide, the thermogenic composition being capable of heat generation when contacted with air or oxygen.</p> |
