What is Butyl Glycol? 

Butyl glycol (also known as BG, 2-butoxyethanol, glycol monobutyl  ether and ethylene glycol monobutyl ether, butyl cellosolve,  butoxyethanol) is a clear, colourless, oily liquid with a unique sweet  yet mild odour and has the formula C6H14O2. It is a butyl ether of  ethylene glycol and is miscible with water and common organic  solvents. It has been produced industrially for over half a century  and is used primarily as a solvent in paints and surface coatings but  also in inks and cleaning products.