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Program/software to calculate evaporation rate of solvent blends?

Q. Dear Sirs,

We come across a problem in one Asian country some solvents have limits on percentage of those solvents used in formulations.

We have Vinyl solvent based spray that contains toluene and MEK / methyl ethyl ketone at almost 70% according to new law the maximum mixture of Toluene and MEK must not exceed 40%.

In the past there were programs available for download (from major Solvent manufacturers) that would give a replacement solvent blend with same (similar) Evaporation rates.

I would appreciate very much if you could give us some ideas on these programs if they still exist and how can I find where.

Thank you very much,

Doug Dr.Rasik
product designer - Bangkok,Thailand 2007

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Q. I would also like to know if we can get the software for solvent evaporations. That would be highly useful.

Tilok Kataria
- Sloatsburg, New York
January 7, 2008