Argon (Ar)

Argon (Ar) is a noble gas that comprises 0.93 percent of the earth's atmosphere. (Noble gases are a group of rare gases that include argon, helium, krypton, neon, xenon and sometimes radon. They exhibit great stability and extremely low reaction rates. Also called inert gases.)

Colorless, odorless, tasteless and nontoxic, argon forms no known chemical compounds. A specific gravity of 1.38 makes argon 25 percent heavier than air making argon an asphyxiation danger in low or confined areas. At atmospheric pressure, it becomes a liquid at -302°F (-186°C). Noncorrosive and non-flammable, argon also exhibits low thermal conductivity and slight solubility in water.

Common uses of Argon?

Argon is used primarily for applications such as arc welding, analytic equipment, steel making, heat-treating and electronics manufacturing.

Common Cylinder Sizes

Bulk - call for details
Liquid Cylinder GP - 4,500cf @ 250psi
T - 336cf, S - 154cf, Q - 83cf, G - 40cf, R - 20cf (these volumes are at 70 degrees Fahrenheit) Cylinder Pressure changes with temperature, click to find out details (pdf)
Larger Cylinder Sizes and High Pressures available. Please call.

Common Conversion Factors

1 gallon liquid (nbp) = 112.5 cf Gas (NTP)
1 liter liquid (nbp) = 29.71 cf Gas (NTP)
1 kg = 22.4 cf Gas (NTP)
1 pound = 9.671 cf Gas (NTP)

Properties of Argon:

Molecular Weight: 39.95
Specific Volume: 9.7 CF/lb
Flammable Limits: Nonflammable
CGA Valve: 580, 3HP-677, 2HP-680
DOT Name: Argon, Compressed
UN No.: UN1006
DOT Class: 2.2
DOT Label: Nonflammable Gas
CAS Registry: 7440-37-1

Argon Purity Levels

Cylinder Size Details (pdf)

MSDS

Safe Handling of Compressed Gases (pdf)