Can flashpoint be calculated from flashpoint of components?

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steveorg
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Can flashpoint be calculated from flashpoint of components?

Post by steveorg »

Let's say I have substance A with a closed cup flashpoint of 200° and substance B with a closed cup flashpoint of 110°. If my mixture is a 1 to 2 ratio of A to B, can the mixture's flashpoint be calculated as:
(1x200°)+(2x110°)/3=140°

edit: I should mention that the substances are non-reactive plant based oils.
expert
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Post by expert »

Good question but the answer is possibly the following. When you mix relatively similar amounts (such as 1:2) of two different flammable materials, flashpoint possibly will be controlled by the most flammable material so it will be close to 110°C
Remember safety first! Check MSDS and consult with professionals before performing risky experiments.
expert
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Post by expert »

After I wrote my answer I found this useful study. I'm sure you can figure out
http://dl.uctm.edu/journal/node/j2006-3 ... 91-296.pdf
Remember safety first! Check MSDS and consult with professionals before performing risky experiments.
steveorg
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Post by steveorg »

I'm sure you can figure out
Don't be so sure! I'm not very educated in the ways of chemistry and its supporting math. :?

You said "... the answer is possibly the following." Perhaps if I give a specific example, you'd be able to be more certain. One example would be soy bean oil with a flash point of 280°C and orange essential oil with a flash point of 57°C.

I really appreciate your help.
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