53 replies to this topic

[The_Djinn]

No KCIO4 ? easier to buy than making

Edited by The_Djinn, 06 March 2004 - 01:26 PM.

[BigG]

I know this is an old thread but i was spekaing to my chemistry teacher today and he said that you can change KCLO3 into a sulphate easily and then very easily change it back into KCLO4. Any ideas on how to do this??

I'll challange your chimistry teacher to come up with something that would not blow in his face.

There are way of doing it, but they are complete madness to try in a home lab.

[robert johnson]

How do you intend bringing them back as thay are classified as Hazmat? Are you going by plane or Boat?

Rob

[yanhua]

I know this is an old thread but i was spekaing to my chemistry teacher today and he said that you can change KCLO3 into a sulphate easily and then very easily change it back into KCLO4. Any ideas on how to do this??

Why not use electrolysis of KClO3 to produce KClO4, think of it as refining:)

Yanhua

[BigG]

Yanhua, I think the whole point is that pyrodude would like to make it without electrolysis.

[pyrodude]

i figured out today that potassium sulphate could be made by mixing potassium hydroxide and sulphuric acid from this i think i can change it to KCLO4 but i dont know how. Has anyone got any ideas. Cheers Kyle

[Phoenix]

You can buy K2SO4 very cheaply from most garden centres. No need to mess around with H2SO4 or KOH. I suspect it's potassium sulphate onwards where things start to get a bit tricky.

[Jerronimo]

How do you intend bringing them  back as thay are classified as Hazmat? Are you going by plane or Boat?

Rob

Sadly they don't sell KCLO4 as far as I know, I will have to ask nicely.

And yes, shippingcharges would be very steep indeed, but fortunately I live in The Netherlands(next to belgium) so a 100 KM drive will sort that out.

[The Alchemist]

potassium perchlorate is easily prepared in quantity by electrolisis of Sodium chloride or chlorate.
The first article in this thread is a very good description of the process. I now use Platinium electrodes.
The electrolysis is continued untill ozone is smelt. At this point almost 98 percent of the salt has been converted from chloride to chlorate then on to perchlorate. KCl granule is cheaply obtained from agricultural fertiliser suppliers originating from the vast deposits in Germany at only a few dozen pence a lb. I may be a little out on that one.
Filtered KCl solution is added to the filtered electrolyte.
The Pot perchlorate formed then falls out of the solution as a finely crystalised product.. It is filtered off washed with cold waterand recrystalised to remove residue Sodium ions a couple of times.
If you have time and use quantities of perchlorate this is the easiest option. For small users its best to purchase it.
cheap cheap cheap the budgie said.
For an interesting story in Pyro have a look at my alchemy web page at
http://www.glassbeads.co.nz.
Cheers
Ray
The Alchemist