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Author: Subject: Firevase - Legit or not ?
Herr Haber
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[*] posted on 4-3-2019 at 04:11
Firevase - Legit or not ?


Dear Mad Scientists,

My attention was recently drawn to these fire extinguishing vases:
https://www.dezeen.com/2019/02/25/vase-fire-extinguisher/

I have found very little information about them and would think of a hoax.
I dont see how potassium carbonate will help put out a fire...

Comments ?
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hissingnoise
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[*] posted on 4-3-2019 at 07:14


Dunno, perhaps the crystallisation of a supersaturated solution of K2CO3 is endothermic?

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Morgan
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[*] posted on 4-3-2019 at 07:34


Here's this ...

"Specifically formulated" aqueous potassium carbonate
http://engineeringtraining.tpub.com/14057/Aqueous-Potassium-...
http://www.dcfpnavymil.org/Systems/APC/apcsys.htm

[Edited on 4-3-2019 by Morgan]
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Morgan
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[*] posted on 4-3-2019 at 08:17


Thinking this over, imagine a scenario of a hot pan of grease on fire and you throw the vase with the solution and it hits off-center or something less than ideal. Seems like a potential to make things worse.
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XeonTheMGPony
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[*] posted on 4-3-2019 at 17:41


Quote: Originally posted by Morgan  
Thinking this over, imagine a scenario of a hot pan of grease on fire and you throw the vase with the solution and it hits off-center or something less than ideal. Seems like a potential to make things worse.



As some one in the field, Potassium Carbonate is used in Kitchen suppression systems and Class K portables all so used as antifreeze in Portable pressurized water extinguishers. Some times Potassium Citrate/ Acetate is used as well

It saponifies the oil surface creating a soap layer as the water evaporates and cools the oil fire.

[Edited on 5-3-2019 by XeonTheMGPony]
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j_sum1
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[*] posted on 4-3-2019 at 19:11


Where I come from, anything that is designated as a "Fire Extinguisher" has to conform to all kinds of regulations -- including certain labelling requirements (ie, ugly).
There are plenty of things you could use for putting out a fire. But there are a smaller set of objects that can legally be sold as fire extinguishers. This aint one of them.
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Herr Haber
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[*] posted on 5-3-2019 at 04:57


Thanks a lot for all your answers: I learned something so that's a good day.
I thought they said carbonate instead of bicarbonate. At least that now makes sense.

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