It’s been a long, long time since I got my BS in Chemistry, and I’ve never done any real chemistry since I left school. Nonetheless, I’m the “go-to guy” around here when a chem-type question comes up. This morning I got one that has me stumped.
Is there any reasonably easy way to calculate - or estimate - the flash point of a mixture of 75% diesel fuel, 25% gasoline?
Consulting my CRC Handbook (53rd Edition - it’s been a long time) did not help. Searching GQ on “flash point mixture” turned up nothing. A search online turned up this paper, in which the author proposes a theoretical method, but it’s far from easy. Perhaps in a week or so I could slog through it, and it seems to be a far-from-generally-accepted procedure anyway. Everything else I found seems to indicate that you can’t calculate or estimate flash point, you can only do the ASTM cup test.
Trusting in Dopers’ collective knowledge and wisdom, I thank you in advance for any insight you can provide.