petrolene
/ˈpɛtrəliːn/(also petroline) Chemistry
noun
The oily volatile component of asphalt, originally considered to consist of a single hydrocarbon and later discovered to be a mixture of compounds; any of a variety of compounds present in this mixture.
Origin
Mid 19th century; earliest use found in Edinburgh New Philosophical Journal. From French pétrolène from pétrole + -ène.