Rubbing alcohol refers to either isopropyl alcohol (propan-2-ol) or ethanol based liquids, or the comparable British Pharmacopoeia defined surgical spirit, with isopropyl alcohol products being the most widely available. Rubbing alcohol is undrinkable even if it is ethanol based, due to the bitterants added. Rubbing alcohol refers to either isopropyl alcohol (propan-2-ol) or ethanol based liquids, or the comparable British Pharmacopoeia defined surgical spirit, with isopropyl alcohol products being the most widely available. Rubbing alcohol is undrinkable even if it is ethanol based, due to the bitterants added. They are liquids used primarily as a topical antiseptic.They also have many industrial and household uses. The term 'rubbing alcohol' has become a general non-specific term for either isopropyl alcohol (isopropanol) or ethyl alcohol (ethanol) rubbing-alcohol products. The United States Pharmacopeia defines 'isopropyl rubbing alcohol USP' as containing approximately 70 % alcohol by volume (≈ 95º alcohol proof) of pure isopropyl alcohol anddefines 'rubbing alcohol USP' as containing approximately 70 percent by volume of denatured alcohol. In Ireland and the UK, the comparable preparation is surgical spirit B.P., which the British Pharmacopoeia defines as 95% methylated spirit, 2.5% castor oil, 2% diethyl phthalate, and 0.5% methyl salicylate.Under its alternative name of 'wintergreen oil', methyl salicylate is a common additive to North American rubbing alcohol products. Individual manufacturers are permitted to use their own formulation standards in which the ethanol content for retail bottles of rubbing alcohol is labeled as and ranges from 70-99% v/v.