Back to home page Back to Praxair Corporate Site Welding Supplies Specialty Gases and Equipment Back to Cart Praxair Direct Price Quote Button Sign in Register Contact Us Store Locator Home Resource Center

For questions about Praxair products
please call 1-800-PRAXAIR or email us.





Propane (C3H8) is a colorless, flammable, liquefied gas with a distinct odor. The flame temperature of the oxy-propane flame is lower when compared with the acetylene and FG-2™. The primary flame releases less BTU when compared with FG-2™ or acetylene, which increases preheat time. Propane is commonly used by scrap yards for cutting of carbon steel where the cut quality is less critical. Where cut quality is not a concern, propane may be a cost-effective fuel gas. Grade T supply hose is necessary when cutting with propane.

Chemical Formula C3H8
Minimum Purity 80% - 99.0%
Cylinder CGA Outlet 510
MSDS P-4646
CAS Number 74-98-6
UN Number 1978
US DOT Name Propane
US DOT Label Flammable Gas
US DOT Class 2.1 Flammable Gas


Cylinder Style Cylinder Capacity (lb)* Pressure at 70 °F (21 °C) (psig/kPa) Part Number
FX 100 110/757 PR 100
FC 50 110/757 PR 50
F33 33 110/757 PR 33

*1 lb = 8.76 cubic feet