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Author: Subject: Sulphuric Acid Drain cleaner as a reagent?
Pseudomonia
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[*] posted on 9-6-2010 at 13:27
Sulphuric Acid Drain cleaner as a reagent?


I'm building up my home chemistry kit and I thought it would be a good idea to buy some Sulphuric acid based drain cleaner called one shot.

I got it home and I was quite excited when I found I bought 1L of near concentrated Sulphuric Acid for only £9.

I then, to my disappointment found out that it was purple.

I also looked on the MSDS to find it also contains organic digestants.

So my question is this, What kind of experimants can I do with this stuff and is this stuff good enough to use as a reagent with an aim to create nitric acid using a glass distilation kit?
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franklyn
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[*] posted on 9-6-2010 at 16:32


Given the plethora of discussion on this what need do you perceive
for yet one more thread of it ?

http://www.google.com/search?hl=en&as_q=sulfuric+drain&a...

.
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Pseudomonia
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[*] posted on 9-6-2010 at 19:00


Ah, thank you.

Just what I'm looking for.
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Sedit
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[*] posted on 9-6-2010 at 19:29


Look around the forum for cleaning H2SO4 you will find pictures of mine and others around where a pinch of concentrated H2O2 will remove that purple color in a few seconds flat. I have seen it turn the crudiest of H2SO4 into some very nice lookin shit. Have you attempted to remove the dye using activated charcol?

As a rule of thumb iv noticed when adding the 35% H2O2(less concentrated works but dilutes more) is the more it foams the more shit its cleaning out and the more shit was in it. I would go on but its late and im sure there more here that can point you in the right direct,

GL sedit.





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Pseudomonia
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[*] posted on 10-6-2010 at 07:51


Thanks for that sedit.

Activated Charcoal and conc H2O2 are on my wish list of chemicals to buy, so I'll look into those methods.
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hissingnoise
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[*] posted on 10-6-2010 at 08:54


Pseudomonia, what is the concentration of acid you have?
If you want strong HNO3 from it, it should be ~98%.
I'll assume it's ~93%, so you'll need to boil off the 5% water.
If the contaminents are purely organic, they just may be oxidised by the boiling, and if they are you should end up with colourless acid.


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Pseudomonia
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[*] posted on 10-6-2010 at 11:04


It's a 91% solution of sulphuric acid.

I'll have a go at boiling it off first. Thanks :)
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hissingnoise
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[*] posted on 10-6-2010 at 11:21


Just beware the (cough!) dreaded fumes - do it outdoors, if possible, and stay upwind. . .

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[*] posted on 10-6-2010 at 11:41


Do that shit outside:o

I onetime setup to boil some down and sort of forgetting about it I looked out back to see what I thought was my lab on fire due to the dense white smoke rolling out the large drive in door. Turns out this is just the fumes mixing with the humid air creating some of the thickest smoke ever aside from real smoke. Oddly though even though it was irritating it was not nearly as bad as I expected but believe me I took as small and shallow breaths as possible as I rushed to shut things down. I can imagin a lung full laying a person out in short order.





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Pseudomonia
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[*] posted on 10-6-2010 at 13:41


Luckily enough I live on the coast at least I'll have alot of wind to help me out :)
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[*] posted on 15-6-2010 at 06:16


i have used the exact same stuff to make erythritol tetranitrate, it reacted as expected and the mixture soon turned clear. the end product showed no signs of impurity.
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