Abstract:Recebido em 10/5/06; aceito em 16/8/06; publicado na web em 26/3/07
DETERMINATION OF EDTA CONTENT IN CLEANING SOLUTIONS AFTER THEIR USE IN INDUSTRIAL EQUIPMENTS.Cleaning solutions containing EDTA are widely employed to remove incrustation despite of the costs involved. The free content of EDTA in commercial solutions may be determined by mixing an aliquot to ammonium oxalate and using a standard calcium solution as titrant. The end-point is detected by the formation of insoluble calcium oxalate after all EDTA … Show more
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