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Photo engraver of Magnesium sheets
I have a question from a customer on a shop that photo-engraves magnesium sheets. They use nitric acid to dissove magnesium which produces Mg (NO3)2 in the solution. They "develop" the exposed plates by washing them with trichloroethylene.
The questions are: " What nitric acid decomposition products are likely to be vented?" and " Is there a better substitution or 'green' alternative to trichloroethylene?"
Any help on this would be appreciated.