Steel blacking salts

[Maurice Cox 1Participant @mauricecox1]

I have been given a tin of " Precision Paints S7 Black Oxidising Salts for Steel".

There are however no instructions with it. Can anyone tell me how to use them please?

Maurice.

[Maurice Cox 1Participant @mauricecox1]

[roy entwistleParticipant @royentwistle24699]

Maurice Have you thought of contacting Precision Paints ?

Roy

[Oompa LumpaParticipant @oompalumpa34302]

The likelihood is that it is a proprietory mix of Potassium Nitrate, Potassium Nitrite and Caustic Soda – all highly corrosive and all highly volatile. Before you start messing about with it find out for certain what the contents are. For blueing small parts I use a small stove and pure Potassium Nitrate but I am extremely careful not to introduce so much as a drop of water into the (boiling) mix as the results are spectacular – and unwanted. It is not something you want to be messing about with unless you have an actual use for.

graham.

[Maurice Cox 1Participant @mauricecox1]

Thanks for the response gents. I did think about contacting Pheonix paints, but it seemed a bit of a cheek as I did not buy direct from them. It sounds as though it may be some nasty stuff, so I will find out how to dispose of it safely. Thanks anyway.

Maurice

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