All about aluminium tetrafluoride

[kandelabr]

Hello.

I can't find any data on aluminium tetrafluoride. I am looking for its reaction with water, formation enthalpies, temperatures and anything/everything else.

Could someone give me at least a hint where to look at, a material database, a book, website, anything...?

Thanks!

 

[Borek]

aluminium tetrafluoride

Sodium? Potassium? Aluminum tetrafluoride is not a full name. It is like stating "I can't information about chloride".

 

[kandelabr]

Actually, I don't know. There's the patent I found:

http://www.freepatentsonline.com/4403643.pdf

See table on page 4 - there Aluminum floride (I guess it's AlF₄).

Any similar substances would also be welcome.

 

[Borek]

Aluminum floride (I guess it's AlF₄).

You guess wrong, no wonder you can't find anything. It is AlF₃.

 

[SteamKing]

kandelabr:
Here is a link to a Material Safety Data Sheet (MSDS) for AlF3:
http://www.solvaychemicals.us/static/wma/pdf/5/1/1/9/ALF.pdf

 

[kandelabr]

yes, I've seen this but it doesn't contain any data i am looking for.

i also found out prices for this material are ~100$ per gram. i would need ~100 kg. since i don't have millions, i guess i should be looking for something else?

 

[SteamKing]

Try this link:
http://www.alcoa.com/alumina_minerals/north_america/en/pdf/aluminafluoride.pdf

You will note that this material is chemically inert at room temps. I don't know why you need formation enthalpies since this material is produced on an industrial scale.

Your price information seems to be off as well. It comes in 50 and 100 pound bags, which at a price of $100/g, would cost either $2.25 mil or $4.5 mil.

 

[kandelabr]

... I don't know why you need formation enthalpies since this material is produced on an industrial scale...

sorry, i was wrong - i don't need to know formation enthalpies, i need to know how much energy is released when this thing reacts with water to form a hydrate and how do i reverse this reaction.

and maybe not only for aluminium fluoride, could be any other substance. in general, i am looking for a strongly exothermic reaction that is reversible. your ideas are very welcome, if you have any.

thanks.

 

[SteamKing]

I think the sentence "At ambient temperatures, it is chemically inactive." takes care of producing any strongly exothermic reactions.

 

[dmssrinivas]

I don't know about the exothermic reaction of AlF3 with water, but you have a very good chance of getting this for lower cost because, Na3AlF6 is Cryolite and it is a naturally occurring substance.

 

[Borek]

I don't know about the exothermic reaction of AlF3 with water, but you have a very good chance of getting this for lower cost because, Na3AlF6 is Cryolite and it is a naturally occurring substance.

No idea what you mean.

 

[dmssrinivas]

No idea what you mean.

I mean, $100 a gram is too much for a naturally occurring substance.

 

[kandelabr]

after a little research and a bit of luck, i found out it is actually AlF₃. This is a really cheap substance, and in attachment below there is an article covering everything i was asking about.

thank you all for replies!
dmssrinivas: do you have some more information on this Na₃AlF₆? i don't mean wikipedia, something like the article i attached would be most welcome :)

 

[dawin]

I mean, $100 a gram is too much for a naturally occurring substance.

WHAT ABOUT DIAMONDS?!

(I'm kidding.)

 

[Borek]

I mean, $100 a gram is too much for a naturally occurring substance.

Cryolite and AlF₃ are two different substances.

 

[dmssrinivas]

Cryolite and AlF₃ are two different substances.

I thought Cryolite is 3(NaF).AlF3 and separation is easy. Sorry If I am wrong.