What does LP Gas stand for?

LP Gas is an abbreviation of Liquefied Petroleum Gases. Up until 1998 the World LP Gas Association used the abbreviation LPG. At the 11th World LPG Forum held in Rome it was decided to use the abbreviation LP Gas “in order to capitalise on the environmental aspects and all purpose qualities…..an opportunity to capture the worldwide known and accepted fact that “Gas” is a clean fuel”

What is LP Gas?

LP Gas is a mixture of light hydrocarbons that are gaseous at normal temperatures and pressures but readily liquefy at moderate pressures or reduced temperatures. The main component gases are Propane (C3H8) and Butane (C4H10). LP Gas can consist of Propane, Butane, or a mixture of these, depending on the application or climate. Other trace elements are also sometimes present.

What are the main characteristics of LP Gas?

Butane boils at around zero degrees Centigrade and Propane boils at minus 42 degrees Centigrade. One of the main characteristics of LP Gas is the fact that it is portable. In liquid form the product can be easily transported. Although LP Gas is stored as a liquid it is generally used in a vapour (or gaseous) phase. One unit of liquid LP Gas will generate 250 units of vapour. LP Gas vapour is heavier than air. Any leak will fall to the ground and seek out drains, gullies and waterways. In liquid form LP Gas has a density of around half that of water which means it will float on rivers and waterways if the ambient temperature is low enough. These are important characteristics when designing LP Gas storage and distribution facilities. LP Gas vapour is invisible and has no natural odour and so a stenching agent is added to the product to enable any leaks to be detected by smell. The gas burns in a narrow range of between 2% and 10% of LP Gas in air. These are called the flammable limits. The stenching agent is added to allow leaks to be detected well below the 2% flammable limit.

What are some of the important properties of LP Gas?

LP Gas has a high energy value (around 45MJ/kg) and burns with a hot flame (around 2000 degrees Centigrade). This makes the product very good for cooking applications, particularly in the Asian market where it is frequently used when cooking with woks. Both Propane and Butane have high octane numbers. The Research octane number of Propane is over 100 making it a very useful automotive fuel. LP Gas contains little of the contaminants that are found in the more traditional liquid fuels. Sulphur, Vanadium and Sodium are virtually non existent making the product a very clean burning fuel. This allows LP Gas to be used in direct firing applications such as in the baking and ceramics industries.

Where does LP Gas come from?

LP Gas originates from both refineries as a refinery product and from natural gas fields as an associated product. The majority of the LP Gas produced worldwide comes from gas fields and from there it is transported by ship to the major markets. These ships are often large refrigerated vessels allowing the product to be transported in a more economic fashion.


Page Last Updated: 16/02/2010 01:14:37 +0800