iamme9182 - 31-12-2004 at 14:26
i was reading about getting I2 from providone iodine and was playing around with it. i had read that the providone was soulable in xylene so i mixed
the iodine with xylene and removed the xylene layer after a while then mixed hcl with the iodine solution. later i mixed in some sodium hydrochloride
and got a yellow solid floating in a clear liquid. question is what is that solid?
guy - 31-12-2004 at 16:19
That could be iodine. THe hypochlorite oxidized the iodide ion to iodine.
HNO3 - 31-12-2004 at 17:15
I've had the same problem. Might be the tribromide ion. Or another halohalide.
halogen - 2-1-2005 at 07:46
1)If it were the tribromide ion, where would the bromine come from?
2)not a halohalide. ICl is black or red, and I doubt ICl3 which is orange-yellow and crystaline would form. Also, interhalogen compounds dont like
water.
3)it could be an oxidation product of povidone.
Marvin - 2-1-2005 at 09:29
If there is any ethanol, acetaldehyde or a compound with CH3CO-C in it basic iodine will produce iodoform. Yellow solid, characteristic smell,
insoluable in water. Hypochlorite normally has a large excess of hydroxide and will reoxidise iodide to iodine to produce a larger yeild of iodoform.
neutrino - 2-1-2005 at 10:11
My guess would be that some povidone crystallized with a bit of iodine in it.