Sciencemadness Discussion Board

Bromine production from BCDMH

devongrrl - 3-12-2011 at 08:48


I have seen a number of threads regarding the production of bromine from pool chemicals.

Has anyone tried the reduction of 1-bromo 3-chloro 5,5 dimethylhydantoin
(BCDMH) in aqueous soln by sodium metabisulfite ?

This came from "Small scale synthesis of lab reagents with reaction modelling" by Lerner, L. 2011 CRC Press.

Btw, if anyone would find this reference useful and assuming it hasn't already been added to the library, I could up it somewhere.

Polverone - 3-12-2011 at 12:01

Certainly it's been tried. Lerner himself is a member here ('len1'). The last few pages of this thread may be instructive: https://www.sciencemadness.org/whisper/viewthread.php?tid=69...

Sedit - 3-12-2011 at 13:36

LOL, i was woundering how lonh it would be before someone wanted to upload a pirated copy of Lens book here.

AndersHoveland - 3-12-2011 at 14:04

Quote: Originally posted by devongrrl  

Has anyone tried the reduction of 1-bromo 3-chloro 5,5 dimethylhydantoin
(BCDMH) in aqueous soln by sodium metabisulfite ?


You might want to use a milder reducing agent.

Essentially, BCDMH partially hydrolyses in water to hypochlorous and hypobromous acid, HOBr, especially in the presence of an acid.

you might also see:
http://www.backyardchem.com/bromine-from-BCDMH.php

[Edited on 3-12-2011 by AndersHoveland]