Gas density

The sources are:

Symbol
$\rho_{gas}$
Unit
kg/m$^3$
Formulae
$- 5.2536065 \cdot 10^{-7} \theta_{air}^{3} + 3.860201577 \cdot 10^{-5} \theta_{air}^{2} - 0.005538444326 \theta_{air} + 1.293393662$humid air @ 1 atm (Tsilingiris2007)
$\frac{360.77819}{T_{air}^{1.00336}}$air @ 1 bar (Dumas&Trancossi2009)
$\frac{351.99}{T_{air}} + \frac{344.84}{T_{air}^{2}}$air @ 1 bar (UW/MHTL 8406, 1984)
$\frac{353.0 p_{gas}}{T_{gas}}$air (ideal gas)
$\frac{337.4 p_{gas}}{T_{gas}}$N2 (Vermeer1983)
$\frac{1666 p_{gas}}{\theta_{gas} + 230}$SF6 (Vermeer1983)
$\frac{538.9 p_{gas}}{T_{gas}}$CO2 (linear interpolation)
$\frac{p_{gas}}{R_{gas} T_{gas}}$ideal gas
$\frac{390.1 p_{gas}}{T_{gas}}$O2 (linear interpolation)
Related
$p_{gas}$
$\theta_{air}$
$\theta_{gas}$
Gas temperature [$^{\circ}$C]
Used in
$\alpha_{gas}$
$\eta_{gas}$
$\nu_{gas}$
$p_{gas}$
$V_{m}$
Molar volume [m$^3$/mol]
Choices
GasFormula0$^{\circ}$C15$^{\circ}$C25$^{\circ}$C
Air-1.2921.2251.184
N2N21.25011.18481.145
SF6SF66.61616.25636.0383
CO2CO21.97631.87141.8075
COCO1.25021.18491.145
O2O21.42871.3541.3085
H2H20.08990.08520.0823
NH3NH30.77130.72890.7033
SO2SO22.93052.76332.6636
HeHe0.17840.16920.1635
ArAr1.78351.69031.6335
KrKr3.7483.55143.4314
XeXe5.89655.5845.3937