Applications | Material Safety Data Sheets


SECTION 8 PHYSICAL AND CHEMICAL PROPERTIES
1
 Name OXYGEN
2
 Formula O2
3
 CAS Number 7782-44-7
4
 Molecular Weight 31.999
5
 Melting point 54.36 K , 218.79 C , -361.82 F
6
 Boiling point @ 101.325 kPa (1 atm) 90.17 K , -182.98 C , -297.36 F
7
 Critical Temperature 154.58 K , -118.57 C , -181.43 F
8
 Critical Pressure 50.43 bar , 49.77 atm , 731.43 psia
9
 Critical Volume 73.4 cm3/mol
10
 Critical Density 0.436 g/cm3
11
 Critical Compressibility Factor 0.288
12
 Acentric Factor 0.022
13
 Density of Liquid @ 140 C 0.876 g/cm3
14
 Coefficient of thermal Expansion of Liquid @ 25 C 0.00954 1/C
15
 Surface Tension @ 218 C 22.5 dynes/cm
16
 Density of Gas @ 1 atm and 70 F (21.1 C) 1.325 kg/m3 , 0.0827 lb/ft3
17
 Relative Density of Gas @ 1 atm and 70 F (Air =1) 1.105
18
 Enthalpy of Vaporization @ Boiling Point 210.63 kJ/kg , 90.57 BTU/lb
19
 Enthalpy of Fusion @ Melting Point 13.88 kJ/kg , 5.97 BTU/lb
20
 Heat Capacity of Gas @ 25 C , Constant Pressure (CP) 0.921 kJ/(kg K) , 0.22 BTU/(lb R)
21
 Heat Capacity of Gas @ 25 C , Constant Volume (CV) 0.661 kJ/(kg K) , 0.158 BTU/(lb R)
22
 Ratio of Heat Capacities for Gas , CP/CV 1.393
23
 Heat capacity of Liquid @ -173 C 1.729 kJ/(kg K) , 0.413 BTU/(lb R)
24
 Heat capacity of Solid @ -243 C 0.894 kJ/(kg K ) , 0.214 BTU/(lb R)
25
 Entropy of Gas @ 25 C 205.04 J/(mol K)
26
 Entropy of Formation of Gas @ 25 C 0 J/(mol K)
27
 Enthalpy of Formation of Gas @ 25 C 0 kJ/mol
28
 Gibbs Energy of Formation of Gas @ 25 C 0 kJ/mol
29
 Solubility Parameter 8.182 (J/cm3)^0.5
30
 Liquid Volume 28.02 cm3/mol
31
 Solubility in Water @ 25 C 39.45 parts per million (wt)
32
 Octanol-Water Partition Coefficient , log KOW
-
33
 Henry's Law Constant for Compound in Water @ 25 C 43630.1 atm/mol fraction
34
 Viscosity of Gas @ 25 C 201.74 micropoise
35
 Viscosity of Liquid @ -130 C 0.071 centipoise
36
 Thermal Conductivity of Gas @ 25 C 0.02571 watts/(m K)
37
 Thermal Conductivity of Liquid @ -150 C 0.1206 watts/(m K)
38
 Lower Explosion Limit in Air
-
39
 Upper Explosion Limit in Air
-
40
 Flash Point Temperature
-
41
 Autoignition Temperature
-
42
 Enthalpy of Combustion @ 25 C (77 F)
-
43
 Threshold Limit Value (ACGIH)
-
44
 Permissible Exposure Limit (OSHA)
-
45
 Recommended Exposure Limit (NIOSH)
-

SECTION 9 STABILITY AND REACTIVITY
Reactivity Stable at normal temperature and pressure.
Conditions to avoid Avoid contact with combustible materials. Containers may rupture or explode if exposed to heat.
Incompatibilities Combustible materials , halo carbons , metals, bases , reducing agents , amines , metal salts , oxidizing materials
Hazardous decomposition Thermal decomposition product : miscellaneous decomposition products
Polymerization Will not polymerize.

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

 

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