Otherwise known as ethyl alcohol, “alcohol”, “grain-spirit”, or “neutral spirit”, etc. A clear, colorless, flammable oxygenated hydrocarbon. Chemical formula: C2H5OH. It has a boiling point of 78.5°C in the anhydrous state. However, it forms a binary azeotrope with water, with a boiling point of 78.15°C at a composition of 95.57 per cent by weight ethanol.