Description : What is the proportion of Propane and Butane gas in LPG Cylinder?
Last Answer : In Australia, England, and the United States, it's 100% propane. In New Zealand and Belgium, it's 60% propane and 40% butane. In India, Spain, and Hungary, it's 35% propane and 65% butane. In ... on climate. Some even change the ration based on the season. But it is never less than 20% propane.