Because ethyl alcohol (ethanol) has as a lower density than water, its weight can vary from water or other liquids. Here is a quick reference for commonly asked weights: One gallon of 200 proof ethyl alcohol = about 7 pounds (lbs.). Five-gallon jug of 200 proof or 190 proof ethyl alcohol = about 33 lbs. Fifty-five-gallon drum of 200 proof or 190 proof ethyl alcohol (including the weight of the drum) = about 384 lbs. Read more about calculating the density of alcohol.