but the lower toxicity is one of the main points to switch from the dichromate. or at least it is for me, since i'm looking for something i can use in my improv-dim room with less of a headache.
Originally Posted by gmikol
i just checked the MSDS for the "hardener no.3" substance from TCIEurope and it's listed as "flammable solid- cat. 2" and "acute toxicity oral/dermal/inhalation - cat. 4".
4 is the lowest possible category. this should be quite an improvement to the dichromate.
unfortunately i couldn't find anything at Omikron, the place in germany where i can usually order strange chemicals from . i'll email foto suvatlar- a small chemistry shop specialized on photo stuff - who has been very helpful to me in the past. maybe they can come up with something.
thanks a lot for posting the results for the second speedball batch. i'll skip the stuff then and order something from kiwo for first experiments.