Standard Liquid Volume

Standard liquid volume is the liquid volume of the phase at 60 F and 1 atm. If the species is a vapor at these conditions then the volume is obtained at the bubble point temperature. For a solid at these conditions the volume is calculated at the super saturation conditions.

The volume of every neutral species in the PUBLIC, MSEPUB and CMPLEX database was calculated as follows:

1. The volume of any neutral species with a single material balance code was calculated using 1 mole of the species at 60 F and 1 atm. If not a liquid at these conditions, the bubble point temperature was used. 2. For all of the remaining species the liquid volume was calculated at 60 F and 1 atm using .02 moles of the neutral species in 1 mole of water (adjusting the amount of the neutral to prevent any vapor formation). The solution was treated as super saturated (No solid formation). The volume of the neutral species is then calculated as follows:

         Volume neutral species = (volume solution – volume 1 mole H2O)/.02 

If the neutral species was in the dippr databank and the standard liquid volume was supplied, then the dipper volume was used for the neutral species.

With a volume for all of the neutral species, a linear regression was used to calculate the volume of each material code. The material code volume was added to the databank.

The standard liquid volume is then calculated in the Engine code as follows: