"abstract":"<jats:p>A qualitative spot-test and tandem quantitative analysis of dipyrone in the bulk drugand in pharmaceutical preparations is proposed. The formation of a reddish-violet\u00a0 color indicates a positive result. In sequence a quantitative procedure can be performed in the same flask. The quantitative results obtained were statistically compared with those obtained with the method indicated by the Brazilian\u00a0 Pharmacopoeia, using the Student\u2019s t and the F tests. Considering the concentration in a 100 \u03bcL aliquot, the qualitative visual limit of detection is about 5\u00d710-6 g; instrumental LOD \u2245 1.4\u00d710-4 mol L-1 ; LOQ \u2245 4.5\u00d710-4 mol L-1.</jats:p>",