I suggest all you have to do is arrange the components in ascending order of their boiling points, and prepare a table of boiling point versus cumulative vol%. This should correspond to TBP curve of the fraction.
As for converting TBP to ASTM, correlations are available in many sources, eg, API...
can anybody suggest a good correlation for petroleum fraction viscosities as a function of API, K, etc.
many graphical solutions are available, but i am looking for a reliable equation that could be fed into a program.
vishal