Hi I am new to the forum and hope that my post is in the right area. Please let me know if I have breached protocol.
Thanks for the post. Shame they don't give more information about eco friendly alternatives. Interesting point that the alternatives might be problematic in a different way.
On a related subject EU changes (subject of course to Brexit) to the EPP licence in a couple of years may make using KP and KClO3 a thing of the past for hobbyists and if Barium salts and Perchlorates (is this all perchlorates including Ammonium?) are deemed environmentally unacceptable we will need some new ways of producing colours fairly soon. I know there is work on Boron Carbide and various Sr compounds for red and green (and possibly colours between) but are any of them viable in terms of practical use ie cost, efficacy and availability?
I know that Lloyd has produced colours commercially using nitrates as the sole oxidisers (and assume that must be with treated Mg or maybe MgAl?) He has said that he is commercially constrained from sharing these at present. Any ideas or info would be gratefully received.