Research the names of different commercial coolants and then go to their web sites. Most of them will have a Technical Information area on the site that has all sorts of useful info for writing reports.
For example, try Koolmist:
Look up on the nav bar at the top and go to the Tech Area and go through all the articles. Not every manufacturer will have much deep info. You'll have to go through a bunch.
As you're looking at these, jot down keywords to use in Google to broaden your search. Just entering "Coolant" will deliver a lot of hits, as I'm sure you've already noted.