The major one I've seen about the traps here is 1-Bromo-3-chloro-5,5-dimethylhydantoin (BCDMH)... Seems like getting bromine out of that would be slightly more problematic (especially if pure bromine was required). I remember spending some time trying to work out a workable route, but the price is insane anyway (Pool chems are great, but they are FUCKING dear in this Cunt Tree).
no1uno
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Goldmember
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Have you ever come across any Na Bromide in a pool shop No1uno?
I see that a lot of them advertise the stuff for building a bromine bank in spa baths etc,but Im yet to find a place that actually stocks it.
Not that Ive searched real hard.
(from msds BCDMH)
The products of thermal degredation @160 deg c= Bromine, HBr, HCl, oxides of carbon and nitrogen.
Maybe simply heating the stuff will liberate a workable form of bromine/ide
I see that a lot of them advertise the stuff for building a bromine bank in spa baths etc,but Im yet to find a place that actually stocks it.
Not that Ive searched real hard.
(from msds BCDMH)
The products of thermal degredation @160 deg c= Bromine, HBr, HCl, oxides of carbon and nitrogen.
Maybe simply heating the stuff will liberate a workable form of bromine/ide
no1uno
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Nope, not for a few years now
rvd
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while out and about, i noticed that some spa shit contained NaBr (150g/Kg) as well as sodium dichloroisocyanurate, which is the bulk. just wondering if it would be possible to separate the two? (i had a look at some of the properties of both compounds, but could not see a way) any ideas?
Douchermann
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Couldn't find the solubility of the sodium salt of isocyanuric acid, however the free acid is barely soluble in water. Add the mixture to water, acidify well (dilute non oxidising acids) then filter, followed by basification. You have to do stoich, otherwise you'll end up with a bit of salt from the acid upon basification.
Sedit
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What acid would you recommend? The solubility of isocyanuric acid is much lower then NaBr so perhaps the NaBr could be leached out with cold water as well. Plus IIRC the amount of isocyanuric acid is low compaired to the amount of NaBr.
Vesp
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Though at a costly price NaBr is sold at your local Wally World, at near 98% or something like that. 2oz for $2 or something to that effect.
Sedit
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Not no more. They only sell that for the first month or so of summer. Trust me I was quite pissed when I went there just recently to stock up knowing they would stop selling soon and its all done already, no more pool chems unless your highly highly lucky.
Vesp
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Ah I didn't realize that
Douchermann
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@sedit: according to RVD, NaBr is the minority of the mixture, being around 15%. I would suggest an acid like HCl in low conc (~10%). IIRC HCl and NaBr only forms HBr in equilibrium so if done right, the HCl should be completely used up by the isocyanuric acid. Then, fractional crystallization can separate the NaCl and NaBr. An alternative would be forming HBr(aq) then distilling and basifying.
rvd
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hey thank you for the input. upon adding the Na dichloro to h2o, some cl2 was liberated. even more when some dilute hcl was added. most of the solution appeared to form some large shards. a wee bit more, and most of the crystals disappeared. eventually leaving a ppt in the bottom of the solution. id assume that would be isocyanuric acid considering the cl2 liberation and the formation of sodium chloride? but yeah, verdict: great for chlorine! the amount of nabr is just a pain in the ass.
no1uno
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Maybe heat the lot with H3PO4 to get the HBr & HCl - form the salts and separate them by fractional crystallization? Just presuming that the cyclic Chlorine carrier(s) will give the same result as the chlorine salts.
eesakiwi
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hey thank you for the input. upon adding the Na dichloro to h2o, some cl2 was liberated. even more when some dilute hcl was added.
Ah, that makes sense. When swIm did it using the parrifin oil. The weight of the oil above the bromine powder was a major factor.
Now I see that the Chlorine gas being made under oil layer, in the HCL acid/bromine mix,
was being pushed out downwards thru the Bromine mix powder.
That was pre chlorinating the bromine mix & helped to 'pushout' the Bromine when the HCL got to it.
Someone else do what I did & see what happens. It only uses one or two crushed bromine tablets & a dash of Oil & HCL acid.
meme
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Yep, that's one of the refs.
It works great on chlorine, and iodine as well.
Perfect for 2C-I and 2C-C.
I call bs on the claim you can make 2C-I with 2C-H, oxone, and KI.
poisoninthestain
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I call bs on the claim you can make 2C-I with 2C-H, oxone, and KI.
You'd be correct. I thought I corrected this elsewhere but my experiments with oxone and halogenations of 2C-X failed...after the workup I was left with nothing several times...it's conclusive IME that oxone anything for 2C-H does not work.
Moriarty
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Tru-Blu is a spa treatment that is 98.9% sodium bromide. Do a search. It's $20 for 2 pounds. I'd advise buying it from any of the distributors that aren't selling it on ebay. Easiest source I have found thus far.
Sedit
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Yep, that's one of the refs.
It works great on chlorine, and iodine as well.
Perfect for 2C-I and 2C-C.
I call bs on the claim you can make 2C-I with 2C-H, oxone, and KI.
Well its great to see someone that may have practical experiance in the area but it you are going to call BS on a respected member please state why.
Enkidu
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^ many trusted members have said that it doesn't work
Sedit
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I know. Including the person that made the statement in the first place but still just saying bullshit helps no one in anyway. Just making a point thats all.
drone1240
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Does the Bromine stain the glassware when doing a distillation?