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Maurice	25/05/2014 17:08:52
469 forum posts 50 photos	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.
roy entwistle	26/05/2014 08:19:18
1716 forum posts	Maurice Have you thought of contacting Precision Paints ? Roy
Oompa Lumpa	26/05/2014 09:49:37
888 forum posts 36 photos	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	26/05/2014 16:14:59
469 forum posts 50 photos	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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