Petroleum ether is a mixture of light hydrocarbons.
Petroleum is a solvent for fats, resins, and latex/rubber.
Petroleum was formerly used to remove grease stains from clothing.
Petroleum ether is also used to harden a corn on your toe, making it easier to remove. This product is also sometimes used to effortlessly remove adhesive residues on intact skin.
Petroleum ether is also used for polishing and drying instruments.