Specific gravities

[70577]

Where can I find a chart or formula to calculate specific gravities for Petroleum oil and water at above 62 degrees. Specifically around 100 degrees?

 

[TD2K]

For water, use the steam tables.

For oil, I assume you mean the change in SG from its value at 60F or standard temperature. The GPSA Engineering data book has a generalized chart that I typically use. It's likely published also in a lot of other reference books. There won't be much change in SG from going from 60F to 100F, not more than 1% or 2% for an oil.

The GPSA curve shows the SG as a function of temperature and SG at 60F. What I've done is developed the formula for the slope of those lines (they are linear over a reasonable temperature range) and then set up my own equation to estimate the new SG given the temperature and the SG at 60F.

 

[70577]

70577(PET.)

Thanks TD2K for the info.Interested in that formula, or the principles behind it.I'm new in the business and my reference data base is not where I need it yet.