How to make KClO4 ?
Posted 13 January 2007 - 09:20 AM
Does anyone have experience ?
Posted 13 January 2007 - 10:59 AM
Posted 13 January 2007 - 03:16 PM
But the problem is more the way of oxidation from chlorate to perchlorate which temperature is needed ? And does a little bit K2Cr2O7 help for a better result ?
Posted 29 January 2007 - 04:52 AM
Posted 30 January 2007 - 09:07 PM
Posted 31 January 2007 - 02:17 AM
Posted 31 January 2007 - 12:55 PM
No, that is not the reason of high prices. Many industrial processes use extremely toxic and corrosive chemicals in intermediate stages.
very good point. the reason that it is so expensive is because the process involved in producing kclo4,kclo3 is toxic
The real reason for high prices are manyfold, including:
1) Difficult processes, expensive equipment, energy intensive.
2) Profit stacked on profit stacked on profit .... Comapny A makes 100000 kilos of a chem, and sells this to a bulk reseller. The bulk reseller splits the chems in drums of 25 to 100 kilo. The company, buying these drums splits up in packages of a kilo or so, and the final outlet sells quantities of 500 grams or even less. All these things require transportation, handling, and each party wants its profits.
3) High purity demands. The labs (and also the individuals) usually obtain the chemically very pure material, which is much more expensive to make than the raw material. E.g. an extra recrystallize-step may be needed, and that adds a lot to the cost.
Posted 2 February 2007 - 12:36 AM
Posted 27 August 2009 - 07:45 PM
Posted 27 August 2009 - 09:22 PM
An old post, but the easiest way to make KClO4 is to neutralize some perchloric acid with KOH.
Yes, the basic process is valid, however you should also note that perchloric acid, is generally made in the lab by adding a strong acid like to a perchlorate salt, like sodium or potassium perchlorate, under controlled conditions. Thus, it could be seen as a case of one step forward, one step back. (The alternative method is further oxidising of hypochlorous acid ("aqueous solution of chlorine"), but while it's simple in theory, I believe it's a lot trickier in implementation)
Regardless, I don't really see why someone would want to play with perchloric acid; it's some pretty nasty stuff. And if you do choose to attempt the process, (Having some perchloric acid handy) I once again recommend use of a fume hood, or well ventilated conditions, and keeping your acid, dead clear of any organic compounds; being a strong oxidiser as well as acid, the results of contact with organics, is evidently explosive.) I would also recommend use of an ice bath, to control the temperature, adding the acid bit by bit, in small quantities, as well as an excess of sodium hydroxide in the procedure, to completely rid oneself of acid.
Edited by Theophrastus, 27 August 2009 - 09:29 PM.
Posted 11 September 2009 - 05:11 PM
Since United Nuclear sells KClO4 again, ($26.00 a pound) making it would be a waste of time here in the U.S.
Edited by Okcchemist, 11 September 2009 - 08:51 PM.
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