Methanol

Methanol(wood alcohol) is an alcohol found in windshield wiper fluid. It's a colorless transparent liquid. They add food coloring to the windshield wiper fluid so that you won't drink it. The density is 0.792 g/cm3. The melting point is −97.6 °C (−143.7 °F; 175.6 K). The boiling point of methanol is 64.7 °C (148.5 °F; 337.8 K). Methanol is toxic! Ingesting as little as 10 mL (0.34 US fl oz) of pure methanol can cause permanent blindness by destruction of the optic nerve. 30 mL (1.0 US fl oz) is potentially fatal. The median lethal dose is 100 mL (3.4 US fl oz), i.e., 1–2 mL/kg body weight of pure methanol. Alcohols that you can drink that are safe are ethanol, propylene glycol and 2-methyl-2-butanol. Alcohols you can't drink that are toxic are methanol and ethylene glycol.