Nor should it.
Ammonium dichromate used sensibly implies no greater risk of cancer than a
walk to the car. Whereas ferri can be very poisonous if acccidentally
mixed with a strong acid.
I tend to go a little OTT with students in order to underline the need for
care. But we should be careful not to be alarmist. We should also be
careful where, and I am not referring to Mike, one suspects that someone
has an ax to grind.
Terry King
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