Updated 05-May-2020.
Mondo shtuff from around the internet, all about DENATURED ALCOHOL!
My botty best at summarizing from Wikipedia: denatured alcohol has additives to make it poisonous, bad-tasting, foul-smelling, or nauseating . it is sometimes dyed so that it can be identified visually . hundreds of additives and denatur the main additive has traditionally been 10% methanol, methyl alcohol . other typical additives include isopropyl alcohol and acetone . in the united states, mixtures sold as denatured alcohol often have much denatured alcohol is used identically to ethanol itself except for applications that involve fuel, surgical and laboratory stock . pure ethanol is required for food and beverage applications and certain chemical reactions where denaturant would interfere . denature denatured alcohol is a cheaper solution for most uses that do not involve drinking . if pure ethanol were made cheaply available for fuel, solvents, or medicinal purposes, it would be used as a drink . denatonium is often added to give the substance an extremely bitter flavour . methanol is commonly used because its boiling point is close to that of ethanol and because it is toxic . New Zealand has removed methylated spirits there are several grades of denatured alcohol, but in general the denaturants used are similar . a specially denier alcohol is a combination of ethanol and another chemical substance . in the United states and other countries, the use of denatured alcohol unsuitable for beverages avoids excise taxes on alcohol . tert-butyl alcohol and denatonium benzoate are examples of