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Polifosfatos em detergentes em pó comerciais Polyphosphates in commercial powder detergents

By Viktoria Klara Lakatos Osorio and Wanda de Oliveira

Abstract

<abstract language="eng">A didactic experiment is proposed in order to identify inorganic phosphates in home laundry detergents by ascending paper chromatography. Chemical principles related with hard water are also investigated. The role of polyphosphates in detergent formulations is discussed and the softening of hard water by sodium tripolyphosphate is illustrated. Several chemical concepts, related to the daily experience of the students, can be explored in post-lab discussions

Topics: inorganic phosphates, paper chromatography, detergents, Chemistry, QD1-999, Science, Q, DOAJ:Chemistry (General), DOAJ:Chemistry
Publisher: Sociedade Brasileira de Química
Year: 2001
DOI identifier: 10.1590/S0100-40422001000500019
OAI identifier: oai:doaj.org/article:4856fdb575a7474ba4a8cc83b05a77bc
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