Swim was researching the exact same thing today and managed to come across 62% Calcium hypochlorite. As long as we are on the same topic concerning benzyl and benzal chloride. He was only able to find LiOCl (lithium hypochlorite) with a purity of 29% in the "spa" section.
Nicodem, so any Calcium hypochlorite above 56% should work?
Or should he bee looking harder to find a purer form? You guys are constantly reading Swim's mind. Swim went to start a new post and low and behold, someone beat him to it! ::)
I'm sure this is the post you are referring to:
Post 496271 (https://www.thevespiary.org/talk/index.php?topic=8672.msg49627100#msg49627100)
(elfspice: "toluene --> benzyl chloride --> benzaldehyde", Stimulants)
Instead of posting questions in the above thread, Swim thought it would bee best to post them here.
He did manage to find 99% NaBr in the pool section.
In the above linked thread, it mentions the use of KBr and H2SO4 to create benzyl bromide. Will the NaBr work as a substitute?
What is the purest form of LiOCl available OTC? What percentage should he bee looking for?
Thanks
Edit: My bad! After searching through google, Swim found these:
http://www.intox.org/databank/documents/chemical/calchypo/cie100.htm (http://www.intox.org/databank/documents/chemical/calchypo/cie100.htm)
http://www.intox.org/databank/documents/chemical/lithhypo/cie426.htm (http://www.intox.org/databank/documents/chemical/lithhypo/cie426.htm)
According to the above links, looks like 30-35% for the LiOCl and 65-70% for the Ca.(OCl)2 is top purity.
The most common pool hypochlorite is 65-70%, and the link says that that's the dihydrate. That's bad I think because the patent calls for dry or anhydrous bleaching powder or calcium hypochlorite. I think the reaction has a greater possibility for runaway with the dihydrate and thus larger explosion risk. The link also said that it is available in 75-80%, and I know a supplier that sells pool hypochlorite in both 68% and 73%, so perhaps the 73% is anhydrous? It also mentioned that bleaching powder was only 35-37%, and the loomis patent in this thread
Post 34398 (https://www.thevespiary.org/talk/index.php?topic=7588.msg3439800#msg3439800)
(Satan: "benzyl chloride from hypochlorite salts", Chemistry Discourse)
calls for dry bleaching powder so if you bought 68% pool material you would most likely have to adjust your ratios.