2- methylbutanal Parameters for Antoine equation

[7604]

Folks,
Does anyone knows the values of A, B, C parameters for 2-Methylbutal? or where to find them?

Cheers

 

[25362]

I couldn't find the Antoine constants. However, from the Celanese MSDS one can see that the vapor pressure at 20 deg C is about 5 kPa, and its BP at 101.3 kPa is ~92 deg C.
The data for pentanal is very similar. What could be the error if one assumes the same vapor pressure ?

The CRC Handbook gives for pentanal the following VP data,

deg C kPa​

25 4.58​

50 15.1​

75 40.4​

100 92.5​

125 188​

 

[pmharper]

Dear 7604

Using the boiling point and Marrero & Gani property prediction to genererate pseudo-data I estimated the constants to:

Model: Psat(bar) = 10^[A - B/(T(K) +C)]

A = 4.2950236336E+000
B = 1.3220367966E+003
C = -5.5900317428E+001

Best regards

Peter


--
Peter M. Harper
Co-Founder, CapSolva