Vaporization SVP

Adopted saturation vapor pressure expressions (Psat) as functions of temperature (T) for observed species, l-g represents liquid-gas transitions. The “Temp. (K)” column indicates the temperature range for which the SVP functions can be applied. Note that temperature ranges with brackets correspond to temperatures for which only extrapolated SVPs are available, and temperatures without brackets have experimentally determined SVP in the temperature range.
Species
Type
Saturation vapor pressure expressions Psat(T) (bar)
Temp. (K)
Ref.
Input Temp. (K)
&
Output Psat (bar)
CH4
l-g
103.96867−435.453/(T−1.789)
90.686-190.564 (Tcri)
Yaws (2015)

Psat = 0
C2H6
l-g
104.0768-698.93/(T-12.886)
90.3560-305.322 (Tcri)
Yaws (2015)

Psat = 0
C2H4
l-g
103.82898−581.901/(T−17.787)
103.966-122 (Tcri)
Dykyj et al. (1999)

Psat = 0
C2H4
l-g
103.91382-596.526/(T-16.78)
122-174
Dykyj et al. (1999)

Psat = 0
C2H4
l-g
103.91382−596.526/(T−16.78)+0.43429[(T−174)/Tcri]2.79132
+9.717[(T−174)/Tcri]8+52.77[(T−174)/Tcri]12
174-282.350 (Tcri)
Dykyj et al. (1999)

Psat = 0
C2H2
l-g
62.06eTcri/T[(-7.5718(1-T/Tcri)+3.1025(1-T/Tcri)1.5
-3.4594(1-T/Tcri)2.5+0.32221(1-T/Tcri)5]
191.7-308.39 (Tcri)
Kroenlein et al. (2011)

Psat = 0
C4H2
l-g
e10.600-3007.6/T
237.7-410 (Tcri)
Kroenlein et al. (2011)

Psat = 0
C6H6
l-g
103.98523−1184.236/(T−55.623)
278.6877-376.0
Dykyj et al. (1999)

Psat = 0
C6H6
l-g
103.98523−1184.236/(T−55.623)+0.43429[(T-376)/Tcri]2.3835
+12.283[(T-367)/Tcri)8+664.01[(T-376)/Tcri]12
376-562.02 (Tcri)
Dykyj et al. (1999)

Psat = 0
C3H8
l-g
104.1451−889.864/(T−16.066)
[85.4]-369.89 (Tcri)
Yaws (2015)

Psat = 0
C3H6
l-g
104.1322−859.722/(T−17.255)
[87.850]-364.21 (Tcri)
Yaws (2015)

Psat = 0
C3H4-a
l-g
62.80eTcri/T[(-8.4862(1-T/Tcri)+5.4394(1-T/Tcri)1.5
-5.3149(1-T/Tcri)2.5+0.70544(1-T/Tcri)5]
136.7-393.9 (Tcri)
Kroenlein et al. (2011)

Psat = 0
C3H4-p
l-g
104.2817−923.311/(T−32.071)
169.87 (Ttri)-402.7
Yaws (2015)


Psat = 0
HCN
l-g
104.8607−1432.7/(T−3.7358)
259.871-456.65 (T)
Yu et al. (2023)

Psat = 0
HC3N
l-g
104.6649−1470/T
280-315-[527] (Tcri)
Dannhauser & Flueckinger (1963)

Psat = 0
CO2
l-g
73.77eTcri/T[-7.0206(1-T/Tcri)+1.5072(1-T/Tcri)1.5
-2.1863(1-T/Tcri)2.5-3.0645(1-T/Tcri)5]
216.5890-304.128 (Tcri)
Duschek et al. 1990

Psat = 0
CH3CN
l-g
104.6691−1583.4/(T−15.263)
229.349-545.41 (Tcri)
Yaws (2015)

Psat = 0
C2H5CN
l-g
42.60eTcri/T[−8.1477(1−T /Tcri)+2.4460(1−T /Tcri)1.5
−2.5323(1−T /Tcri)2.5−2.4144(1−T /Tcri)5]
[180.4]-561.26 (Tcri)
Kroenlein et al. (2011)

Psat = 0
C2H3CN
l-g
104.5332−1477.29/(T −24.71)
189.642-540.0 (Tcri)
Yaws (2015)

Psat = 0
C2N2
l-g
62.50eTcri/T[-7.0700(1-T/Tcri)+).019087(1-T/Tcri)1.5
-0.13088(1-T/Tcri)2.5-3.7467(1-T/Tcri)5]
245.29-397.1 (Tcri)
Kroenlein et al. (2011)

Psat = 0
C4N2
l-g
103.6326-1159.6/(T-30.398)
[293.0]-296.0-349.7-[496] (Tcri)
Yu et al. (2023)

Psat = 0