or methylated spirits
that has additives to make it poisonous
, extremely bad tasting, foul smelling or nauseating
, to discourage recreational consumption. In some cases it is also dyed.
Denatured alcohol is used as a solvent
and as fuel for spirit burners and camping stoves. Because of the diversity of industrial uses for denatured alcohol, hundreds of additives and denaturing methods have been used. The main additive has traditionally been 10% methanol
, giving rise to the term "methylated spirits". Other typical additives include isopropyl alcohol
, methyl ethyl ketone
, methyl isobutyl ketone
, and denatonium
alcohol does not chemically
alter the ethanol molecule. Rather, the ethanol is mixed with other chemicals to form an undrinkable solution.
Different additives are used to make it difficult to use distillation
or other simple processes to reverse the denaturation. Methanol is commonly used both because its boiling point is close to that of ethanol and because it is toxic. In many countries, it is also required that denatured alcohol be dyed
blue or purple with an aniline dye