I am curious to know in what way is the combination of acid and
LOS deadly. thanks again
Most acids react with most sulphides to produce the gas hydrogen
sulphide, which is indeed deadly and equally comparable with
hydrogen cyanide in firly large doses.
It is poisonous because it combines easily with blood haemaglobin,
which provides oxygen to the vital parts of the body, thus starving
that part of the body of oxygen, especially as this cannot be
reversed. About three months ago two workmen in New Zealand went
into a sewer, died and could not be resusitated even after a quick
The microscopic amount of the gas produced in cleaning the black
tarnish from small jewellery can be discounted as a hazard.I do
agree that Tarnex is better than any acid, however.
I have spent most of my life in chemistry labs which always stink
and I am 88 next month. The town of Rotorua in NZ stinks of the gas,
all the time, every day; but they still grow old there!
Moral? Just keep out of the sewer.
Cheers for now,
JohnB of NZ