| burn in air | 0.40 |
| burn to hydrogen and ca… | 0.25 |
| damage catalyst | 0.16 |
| distinct chemical prope… | 0.25 |
| high heat release | 0.25 |
| colorless, flammable gas | 0.59 |
| flammable gas | 0.50 |
| hydrocarbon | 0.39 |
| gas | 0.33 |
| the chemical compound | 0.33 |
| formed | 0.62 |
| dissolved in acetone | 0.33 |
| released | 0.25 |
| used in lamp | 0.25 |
| diluted with helium | 0.25 |
| considered a catalyst p… | 0.16 |
| burned in the welding o… | 0.16 |