--- In
Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> If you must use FeCl, don't get the pellets or powder. Its
> exothermic (I think this is the right term) when it reacts with
water
> and produces a lot of heat and splashing if you aren't careful.
> Makes a gawdawful mess. Nasty stuff.
The hydrated form doesn't generate very much heat or splash much. It
should be added to the water rather than vice versa. The anhydrous
form generates more heat. I've never had any problems with either
type, though.
Leon