What is the proof of denatured alcohol?

The proof of denatured alcohol refers to its alcohol content expressed as a percentage of the total volume. It is typically denoted by the symbol "% v/v" or "% vol". The proof of denatured alcohol is determined by measuring its specific gravity and comparing it to the specific gravity of pure ethyl alcohol (ethanol) at a specified temperature.

The formula to calculate the proof of denatured alcohol is:

Proof = 2 x (% v/v)

For example, if the alcohol content of denatured alcohol is 95% v/v, then its proof would be:

Proof = 2 x (95% v/v) = 190 proof

Denatured alcohol is ethyl alcohol that has been rendered unfit for human consumption by adding denaturants, which are substances that make it unpalatable or toxic. This is done to prevent the misuse of ethyl alcohol for drinking purposes and avoid the associated health risks and legal consequences.

Denatured alcohol has various industrial and commercial applications, including use as a solvent, fuel, cleaner, and disinfectant. It is important to note that denatured alcohol should never be consumed as it can cause severe health problems, including blindness, organ damage, and even death.