Steel blacking salts

This topic has 4 replies, 3 voices, and was last updated 26 May 2014 at 16:14 by Maurice Cox 1.

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25 May 2014 at 17:08 #153525
Maurice Cox 1
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@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.
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25 May 2014 at 17:08 #23320
Maurice Cox 1
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@mauricecox1
26 May 2014 at 08:19 #153562
roy entwistle
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@royentwistle24699
Maurice Have you thought of contacting Precision Paints ?

Roy
26 May 2014 at 09:49 #153570
Oompa Lumpa
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@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.
26 May 2014 at 16:14 #153615
Maurice Cox 1
Participant
@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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Steel blacking salts

Steel blacking salts

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