Under solid (grey), liquid (blue) and vapor states (white) along the equilibrium curves
Calculate a liquid or gas volume or a mass
At boiling point at 1.013 bar
at 1.013 bar and boiling point
Examples of uses of this molecule in Industry and Healthcare
Acetylene is used for localized or manual operations such as welding, brazing, cutting, straightening or heating.Professionnals & Craftsmen
Acetylene is used as precursor for amorphous carbon hard mask in Plasma-Enhanced Chemical Vapor Deposition (PECVD). It also is a carbon source in some silicon carbo-nitride films.Electronic components
Acetylene is used to lubricate the molds used in glass bottle manufacturing processes. A layer of fine soot is applied onto the glass mold, so that the glass article can be easily separated from the mold after cooling down.Glass
Acetylene is a component of a gaseous mixture used for pulmonary function diagnosis test.Hospital care
Acetylene is used as fuel gas in atomic absorption spectrophotometry.Laboratories & Research Centers
Information to safely use this molecule
Europe (according to EN1839 for Limits and EN 14522 for autoignition temperature)
US (according to NFPA for Limits and ASTM E659 for autoignition temperature)
Recommendations : Air Liquide has gathered data on the compatibility of gases with materials to assist you in evaluating which materials to use for a gas system. Although the information has been compiled from what Air Liquide believes are reliable sources (International Standards: Compatibility of cylinder and valve materials with gas content; Part 1- Metallic materials: ISO11114-1 (March 2012), Part 2 - Non-metallic materials: ISO11114-2 (April 2013), it must be used with extreme caution and engineering judgement. No raw data such as these can cover all conditions of concentration, temperature, humidity, impurities and aeration. It is therefore recommended that this table is only used to identify possible materials for applications at high pressure and ambient temperature. Extensive investigation and testing under the specific conditions of use need to be carried out to validate a material selection for a given application. Contact the regional Air Liquide team for expertise service.
Acetylene was discovered in 1836 by Sir Edmund Davy. Acetylene is a synthesis gas generally produced from the reaction of calcium carbide with water. It used to be burnt in "acetylene lamps" to light homes and mining tunnels in the 19th century. It is colorless, unstable, highly combustible and has a strong garlic odor. It produces a very hot flame (over 3000 °C or 5400 °F) when combined with oxygen. It has been widely used for oxy-cutting and welding metal materials until it was remplaced by arc-based welding processes using argon.