Although I truly do appreciate your help, I disagree with several points you have made:
>Go to the brewing store and pick up some NaHSO3(Sodium metabisulfite) and use the sulfite reaction that Os stated.
According to Osmium, this produces diatomic Iodine, which in my post, I stated I do not want.
>hen when you have your purple solution of Iodine, Do like I did and let it cool and then titrate with NaOH solution. You >can then purify the NaI by crystalizing out the other impurities(Sulfates) by fractional crystalization. (ie. boil off some >water and put it in the fridge.)[/blue]
Let's think about this. Purple solution of Iodine + NaOH --> NaI + NaOI. Yes the first half is useful, but, opun fractional crystallization, (your boiling part in water) hypoiodite ions degrade into iodide ions and iodate ions. The iodate crystallizes out of a pure hypoiodite solution, leaving aqueous sodium iodide. This is fine and dandy, but the issue is: This is where Im getting the NaIO3 from in the first place! Im just running in circles! I can salvage the NaI from these reactions already, and convert I2 to NaI, but I want the byproduct NaIO3 reduced to NaI, Not I2, or any NaIO3 regenerator.
>I really think you should stay away from using NH3 in any reaction using iodine. That ammonia triiodide is really dangerous stuff and even the possibility of some forming in a reaction and blowing up in your face is enough to make me stay the hell away from it. That stuff is a very sensitive explosive and shouldn't be taken lightly.
Let's just say that I humbly disagree. I've worked with the stuff, and these reaction conditions before. I've also made it on purpose, dirty, and with reagent grade materials. It sucks both ways. It's semi-loud, no fire, no light, no spark, just a small purple stain wherever you set it off at, with a noise. Bottom line: Not A Threat, Just A Nuisance; And That's When You Want It To Explode!
As for it's famed sensitivity, I wonder who started that lame ass rumor. The reagent grade shit is fairly sensitive, if you smack it, it will "detonate", and anything made with less than pure ammonia and diatomic iodine will not explode at all, unless its anhydrous and submitted to hella shock trauma.
It will never ever explode in water; this is the recommended storage for it. Even in boiling water, it will never explode, I tried. It can also NOT form in solutions of alkalai iodide, as these combine with iodine to form the triiodide ion. Dont confuse ammonium triiodide with nitrogen triiodide. Nitrogen triiodide NI3 with true ammonium triiodide NH4I3, which Im fairly certain only exists in solution, as I could not isolate it.
Pressure Wave < Black Powder
Shockwave < Less Than Confined Nitrocellulose
Sensitivity < Mercuric Fulminate
Main Charge rating = Piss Poor.
Booster Rating = Pointless.
Primer rating = Not a Chance.
Overall = I can fart with more force.
PrimoPyro
Vivent Longtemps la Ruche! STRIKE For President!