On 18/05/15 19:43, Nick Maclaren wrote:
In article ,

Merely strong dilute, surely? Concentrated would oxidise quite
quite a lot of the cyanide on the way out!

You are, or course, correct. Not sure why I put "Conc". It actually
states 1:2 sulphuric acid: water, making it around 33%.

Apparently, that method was used on ships against rats, had to
be done in the hold (cyanide is very light), and the electricity
had to be off. The people who did it needed to study the way
out when on the way in very carefully! That's reliable second-
hand information, by the way.

No doubt. Makes you wonder how many didn't make it!

--

Jeff