I am a bit worried about the amount of Hydrogen chloride gas which would be produced while mixing ferric Chloride HexaHydrate salt ( reagent grade) to Water, to produce the solution.
Assuming the whole bottle of salt (400grams) is added, slowly, to 1 Liter of water, will it produce a lot of the gas? Even protected with an activated carbon cartridge mask, will it release a lot that would be a problem for the surrounding ecosystem? Will it produce chlorine too?
Hexahydrate ferric chloride is supposed to produce less heat when mixing with water than anhydrous, but the gas aspect is not well documented.
At these quantities, will any smell be detectable within 50 yards? Do surrounding animals risk harm from the gas?