Eupione, or eupion, is a hydrocarbon mixture of the paraffin series, probably a pentane, C5H12, discovered by Carl Reichenbach[1] in wood tar.
It is also formed in the destructive distillation of many substances, as wood, coal, caoutchouc, bones, resin and the fixed oils.
It is a colorless, highly volatile and flammable liquid, having at 20 °C a specific gravity of 0.65.
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