Appendix I: Density Tables
C76IB003EN-E
137
Appendix I: Density Tables
Density of Air
At the temperature t in [°C] and the pressure p in [mbar] or [hPa] the density
ρ
of
air in [g/cm
3
] is calculated using the following formula for an air humidity of 50 %:
ρ
=(((0.34844*p-0.5*(0.252*t-2.0582))/(273.15+t)/1000))
The numbers are valid for a CO
2
content in air of 0.03 % by volume; the numbers
change by ±1/19000 for every change in CO
2
volume content of ±0.0001.
Density of Air (-10 °C to +90 °C)
1
Composition of dry air in [v/v]: 78.110 % N
2
; 20.938 % O
2
; 0.916 % Ar;
0.033 % CO
2
; 0.002 % Ne
The table lists values of air with 50 % air humidity.
1.
Literature: F. Spieweck, H. Bettin: Review: Solid and liquid density determination tm 7/8 1992
p291
Meas.
temp.
in °C
Density in g/cm
3
at the pressure in mbar (=hPa)
900 920
940
960
980
1000
1013.25
1050
-10
0.001200
0.001227
0.001253
0.001280
0.001306
0.001333
0.001350
0.001399
-5
0.001176
0.001202
0.001228
0.001254
0.001280
0.001306
0.001323
0.001371
0
0.001152
0.001177
0.001203
0.001228
0.001254
0.001279
0.001296
0.001343
5
0.001129
0.001154
0.001179
0.001204
0.001229
0.001254
0.001271
0.001317
10
0.001107
0.001131
0.001156
0.001181
0.001205
0.001230
0.001246
0.001291
15
0.001085
0.001110
0.001134
0.001158
0.001182
0.001206
0.001222
0.001267
20
0.001065
0.001088
0.001112
0.001136
0.001160
0.001184
0.001199
0.001243
25
0.001045
0.001068
0.001091
0.001115
0.001138
0.001162
0.001177
0.001220
30
0.001025
0.001048
0.001071
0.001094
0.001117
0.001140
0.001156
0.001198
35
0.001007
0.001029
0.001052
0.001075
0.001097
0.001120
0.001135
0.001176
40
0.000989
0.001011
0.001033
0.001055
0.001078
0.001100
0.001115
0.001156
45
0.000971
0.000993
0.001015
0.001037
0.001059
0.001081
0.001095
0.001135
50
0.000954
0.000976
0.000997
0.001019
0.001040
0.001062
0.001076
0.001116
55
0.000938
0.000959
0.000980
0.001001
0.001023
0.001044
0.001058
0.001097
60
0.000922
0.000943
0.000964
0.000984
0.001005
0.001026
0.001040
0.001079
65
0.000906
0.000927
0.000947
0.000968
0.000989
0.001009
0.001023
0.001061
70
0.000891
0.000911
0.000932
0.000952
0.000972
0.000993
0.001006
0.001043
75
0.000877
0.000897
0.000917
0.000937
0.000957
0.000977
0.000990
0.001027
80
0.000862
0.000882
0.000902
0.000922
0.000941
0.000961
0.000974
0.001010
85
0.000849
0.000868
0.000887
0.000907
0.000926
0.000946
0.000959
0.000995
90
0.000835
0.000854
0.000874
0.000893
0.000912
0.000931
0.000944
0.000979
