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**Molecular formula:** C₄H₁₀
**Chemical formula (condensed):** CH₃(CH₂)₂CH₃
**Molar mass:** 58,12 g/mol
**Information:** Under normal conditions, it is a colourless, flammable, easily liquefiable odourless gas heavier than air. It forms an explosive mixture with air.
**Use:** The mixture of propane and butane is used as a fuel for cooking equipments called propane-butane.