Methylated Spirit or Denatured Alcohol
Alcoholic drinks are heavily taxed by the government, so as to discourage people from over consuming it. Alcohol used for industrial and surgical purposes is not taxed heavily. But in order to prevent people from buying and consuming this alcohol, it is mandatory that ethyl alcohol be mixed with a certain percentage of highly poisonous methyl alcohol or methanol. This renders the ethyl alcohol unfit for human consumption. This mixture is called "Methylated Spirit". If chemicals like copper sulphate or pyridine are added to ethyl alcohol it is called 'denatured alcohol'.
