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Posted By Darren Green
If some sulphuric acid had spilt onto a concrete floor and then dried would any resulting dust be acidic, becoming more of an irritant than normal?
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Posted By Robert K Lewis
The resultant salt is calcium sulphate plus whatever other sulphates forms as a consequence of the reaction between the acid and the concrete. In theory the final mix will be slightly less alkaline than concrete dust itself but this is not to say acidic, the ph of the mixed dusts will be above 7.0
Bob
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Posted By John Webster
The common name for the product of the reaction between the acid and concrete is gypsum - the stuff plasterboard is made of.
Beware, however, if the acid has spilt from a lead/acid car type battery. The resulting dust may contain lead.
John
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Posted By Darren Green
Thanks for the info both, most useful.
Darren
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