Acetylene (C2H2)

Acetylene Gas (C2H2) – a colorless, flammable gas with a garlic-like odor. Acetylene has the highest flame temperature of any common fuel gas because of its triple-bond structure H-C=C-H. Combustion with oxygen achieves a flame temperature of 5,580° F (3,087° C), releasing 1,470 BTUs per cubic foot.

Common uses of Acetylene?

Acetylene's high flame temperature allow it to be used for welding, cutting, brazing and soldering.

Common Cylinder Sizes

Bulk - call for details
WTL - 370 cf, Amedium - 145cf, WS - 130cf, WQ - cf, BA - cf, MC - cf
Cylinder Pressure changes with temperature, click to find out details (pdf)
Larger Cylinder Sizes and High Pressures available. Please call.

Fun Fact

The 'MC' and 'BA' sized Acetylene cylinders were used to power lights on motorcylces and buses respectively.

Common Conversion Factors

1 gallon liquid (nbp) = cf Gas (NTP)
1 liter liquid (nbp) = cf Gas (NTP)
1 kg = cf Gas (NTP)
1 pound = cf Gas (NTP)

Properties of Acetylene:

Molecular Weight: 26.038
Specific Volume: 14.7 CF/lb
Flammable Limits: 2.5-100% in Air
CGA Valve: 510
DOT Name: Acetylene, Dissolved
UN No.: UN1001
DOT Class: 2.1
DOT Label: Flammable Gas
CAS Registry: 74-86-2

Acetylene Purity Levels

Fuel Gas Comparison (pdf)

Cylinder Size Details (pdf)

MSDS

Safe Handling of Compressed Gases (pdf)