Well, first off this is a question to be asked in the Chemcals & Equipment forum.
there is an easy way of making ammonium sulphate from the Home diluted Ammonia that can be bought in any pharmacy, and would turn this synth more OTC
Well you could probably get an OTC drain clearing agent that contains sulfuric acid (NOT sodium hydroxide) and neutralize it with fragrance/color-free ammonia. There you have aqueous ammonium sulfate, if you evaporate the water you will have solid ammonium sulfate, the purity of which may be questionable for use in a sensitive synthesis.
Where should I look for NaBr????And what is his OTC use....
You may be able to look at photography supply places.. Its exact use however, will take some research.
-SpicyBrown
--Ahh! Hidden Cloud, you beat me to it.