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On 19 Dec 2005 at 9:55, Constantino Tobio wrote: > Boiling in scientific terms is when a liquid changes from the liquid to > gaseous state throughout it's volume, while evaporation is when the > surface of the liquid enters the gaseous state. The boiling point is defined as the point where the vapor pressure equals the total absolute hydraulic pressure in the liquid. For a liquid in a shallow pan, this is where the vapor pressure equals atmospheric pressure. While this may seem complicated, it corresponds exactly to our daily experience. > Here's the MSDS I quoted: > > http://hazard.com/msds/f2/bvg/bvgzs.html > > Boiling Pt. is 77F, 25C I see it, but I don't believe it. Perhaps they are quoting the boiling point of the most volatile component, but we've all had cars parked in the sun on 100F days and still had gas left to drive home with. I've also spilled gas on a hot sidewalk and not heard it "sizzle." Any idea what the word "Text" refers to in this line: Boiling Pt:B.P. Text:77.0F,25.0C This is bound to be complicated by the fact that gasoline is a mixture of lots of compounds, but just for reference I looked up a few common components and their boiling points: heptane, BP 98C hexane, BP 69C cyclohexane, BP 81C ethanol, BP 78C -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~