8 replies to this topic

[Dj Killerboss]

Hello guy's

My question: is it dangerous if i mix Perchloric acid with potassium hydroxide solution to precipitate potassium perchlorat???

hope for helpful answers

greez Chris

[Dj Killerboss]

Thanks for the helpful answers.....
sounds like trobbles if i'm not carefull but i will try in little portions

@leosedf: Yes i have 1liter high percentage acid

greez Chris

[leosedf]

That's why i asked.
I wouldn't do it anyway... Too dangerous for me.
I prefer electrolysis method wich is "safer" up to one point.

[BigG]

Hello guy's

My question: is it dangerous if i mix Perchloric acid with potassium hydroxide solution to precipitate potassium perchlorat???

hope for helpful answers

greez Chris

No you can't.

Perchloric acid is high reactive. It does explode in contact with many everyday items. Used in only specialised labs and nowhere in the industry.

Guys, some advises given above are just not responsible (pyrex glass container etc). If you don't know for sure, please don't advise. I am deleting all dangerous posts.

[leosedf]

Heh!
Sorry for the stupid posts! Really
I knew it was dangerous but didn't knew how much. Probably i have more reading to do

[Andrew]

Perchloric Acid is one of those things like Flourine, you really have to make it in situ, as storing the stuff is a lost cause.

[EnigmaticBiker]

Thanks for the helpful answers.....
sounds like trobbles if i'm not carefull but i will try in little portions

@leosedf: Yes i have 1liter high percentage acid

greez Chris

High percentage?

"The acid is extremely corrosive and is very damaging to tissue. It will form explosive mixtures with anything combustible and these mixtures may ignite or detonate without warning. The usual strength of the acid is 72%wt where it forms a constant boiling point azetope. The 70% acid is fairly stable, the anhydrous acid (100%) will explode of its own accord if stored for a period of time. It can only be stored indefinitely at liquid air temperatures."

"Fairly stable" is not stable.

If you are determined to use this, dilute very cautiously (acid into relatively large quantities of distilled water).

Do not try to dissolve metals or any solids in high percentage acid, a huge temperature rise or explosion may result. It will react with the most unlikely materials, eg.

"A stone table of a fume hood was patched with a glycerin cement and several
years latter, when the hood was being removed, the table exploded when a
workman struck the stone with a chisel."

Read widely before you do anything with chemicals.

www.auburn.edu/administration/safety/crcperchloric.html

[EnigmaticBiker]

No no, guys, listen, this is not IF you decide to do it. It's: You should not do it. This is no rough science forum. On this forum we give responsible advise. This acid is not in the realm of home brew.

I agree, doing anything with it is highly dangerous, don't.
The if was just awknowledging that some people will try anything and the link below was to spell out how lethal it really is. There was no intention to encourage use at all.