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### Topic: Storing Solvents at Elevated Temperatures  (Read 1820 times)

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#### Blue Humour

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##### Storing Solvents at Elevated Temperatures
« on: December 18, 2015, 05:59:35 AM »
I would like to store Acetone in a sealed paint tin at 40C. Should I be worried about pressure build up?

I'm stuck on how to figure out whether this is an explosion risk...

#### billnotgatez

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##### Re: Storing Solvents at Elevated Temperatures
« Reply #1 on: December 20, 2015, 04:30:02 AM »
Does the paint can have a screw top or press down lid?

Just some information
From WIKI
https://en.wikipedia.org/wiki/Acetone
For Acetone
Boiling point
56–57 °C; 133–134 °F; 329–330 K
Vapor pressure
9.39 kPa (0 °C)
30.6 kPa (25 °C)
374 kPa (100 °C)
2.8 MPa (200 °C)

From elsewhere on the Internet base on GOOGLE search
Quote
acetone vapor pressure calculator
http://www.ddbst.com/en/EED/PCP/VAP_C4.php
I estimate vapor pressure of acetone at 40 °C

And from WIKI
https://en.wikipedia.org/wiki/Atmospheric_pressure
sea level standard atmospheric pressure    101.325 kPa

« Last Edit: December 20, 2015, 05:08:56 AM by billnotgatez »

#### discodermolide

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##### Re: Storing Solvents at Elevated Temperatures
« Reply #2 on: December 20, 2015, 06:57:46 AM »
I would like to store Acetone in a sealed paint tin at 40C. Should I be worried about pressure build up?

I'm stuck on how to figure out whether this is an explosion risk...

How much acetone?, Size of container?
Generally solvents should be stored at room temperature or below. With acetone at 40°C you are only 16°C below the boiling point so I would say that you can expect a significant pressure build up.

So this is a safety risk. Expect significant degassing if you open the tin, this could cause a static discharge and hence an explosion.
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