CONCOA Precision Gas Controls

Argon (Ar)
DESCRIPTION (Argon):

Argon is a monatomic chemically inert gas that is colorless, odorless and tasteless. Normally supplied in compressed gas cylinders in the non-liquid state. Typical uses include fill gas for incandescent light bulbs, carrier gas for arc welding, plasma jet torches and Geiger counting tubes.

PHYSICAL CONSTANTS (Argon):

Molecular Weight: 39.948
Specific Volume @ 70° F., 1 atm.: 9.67 cu.ft/lb
Boiling Point @ 1.0 atm. : -302.58° F
Freezing Point @ 1.0 atm. : -308.6° F
Triple Point @ 0.68 atm: -310.81° F
Specific Gravity, Gas @ 15° C., 1 atm. (Air = 1): 1.38
Density, Gas @ 20° C., 1 atm.: 1.664 g/l
Density, Liquid @ b.p.: 1.3982 g/ml
Critical Temperature: -188.5° F
Critical Pressure: 705.6 psia
Critical Density: 0.536 g/ml
Latent Heat of Vaporization @ b.p. 39.13 cal/g
Latent Heat of Fusion @ t.p. 6.33 cal/g
Specific Heat, Gas @ 25° C., 1 atm. Cp: 0.1252 cal/g° C
Specific Heat, Gas @ 25° C., 1 atm. Cv: 0.075 cal/g° C
Specific Heat Ratio, Gas @ 25° C., 1 atm., Cp/Cv: 1.668
Thermal Conductivity, Gas @ 0° C, 1 atm. : 3.92x10-4 cal/(sec) (cm2 )(° C/cm)
Viscosity, Gas @ 25° C., 1 atm. : 226.38 centipoise
Dielectric Constant, Gas @ 20° C., 1 atm. : 1.0051659
First Ionization Potential 15.759 eV
Solubility in Water @ 0° C., 1 atm. : 5.24 cc/100g
Solubility in Water @ 0° C., 1 atm. : 2.85 cc/100g

COMPATIBLE MATERIALS (Argon):

Argon is an inert gas and therefore requires no special materials for handling, storage or piping.

CYLINDER CONNECTIONS (Argon):

Standard CGA V-1 Cylinder Connection upto 3000 psig: CGA 580
Standard CGA V-1 Cylinder Connection from 3001 to 5500 psig: CGA 680
Standard CGA V-1 Cylinder Connection from 5501 to 7500 psig: CGA 677
Standard CGA V-1 Cylinder Connection for ultra high integrity: CGA 718