Methanol is the simplest alcohol: one methyl group linked to a hydroxyl group. At room temperature, methanol is a clear, colorless liquid with a distinct odor similar to ethanol, but is highly toxic when ingested by humans. It has a boiling point of 64.7 °C, molar mass of 32.04 g mol−1, and a melting point of −97.6 °C. Methanol has a density of 0.792 g/cm³.
Methanol is a popular chemical precursor to other commodity chemicals and methylamines, converted into chemicals such as formaldehyde or acetic acid. It is used a gasoline additive in biodiesel, as well as in water methanol injections in high performance engines. Methanol often the key ingredient in denatured ethanol solutions, as its toxicity makes it dangerously inedible by humans. Methanol is also a component in antifreeze solutions given its low freezing point, and is a chemical additive in the destructive distillation of wood.