Quit bragging Larry ... 
Methanol, ethanol and isopropyl alcohol are the three most common and lightest alcohols. They contain 1, 2 and 3 carbon atoms respectively. They are all flammable, volatile and toxic. Ethanol is the least toxic, and isopropyl alcohol the least volatile. Methanol is the most toxic and the most corrosive. Isopropyl alcohol is the best to use for cleaning flux residue, but ethanol evaporates faster. Methanol can cause micro-pitting on iron (or below in the activity series) surfaces, so should not be used.