Applications | Material safety data sheet


SECTION 8 PHYSICAL AND CHEMICAL PROPERTIES
1
Name ARGON
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Formula Ar
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CAS Number 7440-37-1
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Molecular Weight 39.948
5
Melting point 83.8 K , -189.35 C , -308.83 F
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Boiling point @ 101.325 kPa (1 atm) 87.28 K , -185.87 C , -302.57 F
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Critical Temperature 150.86 K , -122.29 C , -188.12 F
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Critical Pressure 48.98 bar , 48.34 atm , 710.4 psia
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Critical Volume 74.59 cm3/mol
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Critical Density 0.5356 g/cm3
11
Critical Compressibility Factor 0.291
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Acentric Factor 0.000
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Density of Liquid @ -140 C 1.028 g/cm3
14
Coefficient of thermal Expansion of Liquid @ 25 C 0.01113 1/C
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Surface Tension @ -189 C 13.4 dynes/cm
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Density of Gas @ 1 atm and 70 F (21.1 C) 1.654 kg/m3 , 0.1033 lb/ft3
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Relative Density of Gas @ 1 atm and 70 F (Air =1) 1.379
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Enthalpy of Vaporization @ Boiling Point 161.21 kJ/kg , 69.32 BTU/lb
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Enthalpy of Fusion @ Melting Point 29.59 kJ/kg , 12.72 BTU/lb
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Heat Capacity of Gas @ 25 C , Constant Pressure (CP) 0.52 kJ/(kg K) , 0.124 BTU/(lb R)
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Heat Capacity of Gas @ 25 C , Constant Volume (CV) 0.312 kJ/(kg K) , 0.075 BTU/(lb R)
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Ratio of Heat Capacities for Gas , CP/CV 1.667
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Heat capacity of Liquid @ -173 C 1.146 kJ/(kg K) , 0.274 BTU/(lb R)
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Heat capacity of Solid @ -203 C 0.895 kJ/(kg K ) , 0.214 BTU/(lb R)
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Entropy of Gas @ 25 C 154.73 J/(mol K)
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Entropy of Formation of Gas @ 25 C 0 J/(mol K)
27
Enthalpy of Formation of Gas @ 25 C 0 kJ/mol
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Gibbs Energy of Formation of Gas @ 25 C 0 kJ/mol
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Solubility Parameter 14.138 (J/cm3)^0.5
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Liquid Volume 28.586 cm3/mol
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Solubility in Water @ 25 C 54.13 parts per million (wt)
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Octanol-Water Partition Coefficient , log KOW
-
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Henry's Law Constant for Compound in Water @ 25 C 39696.1 atm/mol fraction
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Viscosity of Gas @ 25 C 224.42 micropoise
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Viscosity of Liquid @ -130 C 0.054 centipoise
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Thermal Conductivity of Gas @ 25 C 0.01795 watts/(m K)
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Thermal Conductivity of Liquid @ -150 C 0.088 watts/(m K)
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Lower Explosion Limit in Air
-
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Upper Explosion Limit in Air
-
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Flash Point Temperature
-
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Autoignition Temperature
-
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Enthalpy of Combustion @ 25 C (77 F)
-
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Threshold Limit Value (ACGIH)
-
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Permissible Exposure Limit (OSHA)
-
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Recommended Exposure Limit (NIOSH)
-

SECTION 9 STABILITY AND REACTIVITY
Reactivity Stable at normal temperature and pressure.
Conditions to avoid Protect from physical damage and heat. Containers may rupture or explode if exposed to heat. Avoid contact with water or moisture.
Incompatibilities No data available
Hazardous decomposition Thermal decomposition product : miscellaneous decomposition products
Polymerization Will not polymerize.

SECTION 10 TRANSPORT INFORMATION
Proper shipping name Argon , refrigerated liquid
(Cryogenic liquid)
Labeling requirements Nonflammable gas

 

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