What is the density of 200 proof ethanol, according to the US Government?

Answer: The density of 200 proof ethanol is 0.79365 g/ml according the the TTB Alcohol Tax and Trade Bureau Gauging Manual Tables.

You can also use the following values to represent the density (specific gravity) of 200 proof ethyl alcohol:

• 6.58 lbs/gal
• 0.79 kg/L
• 0.823 oz/fl-oz

Source: TTB Gauging Manual