Resumen
Equal volumes of potassium permanganate solution are added to a carpolactam test solution and to a blank (water). After standing for a specified time the absorbance, at a wavelength of 420 nm, of the test solution and of the blank are compared in cells of 5 cm thickness. The permanganat index is the difference between the absorbance of the test sample and that of the blank, multiplied by 100/3. It is a conventional measure of the content of oxidizable impurities.
Informaciones generales
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Estado: RetiradaFecha de publicación: 1988-04Etapa: Retirada de la Norma Internacional [95.99]
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Edición: 1Número de páginas: 2
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Comité Técnico :ISO/TC 61/SC 5ICS :71.080.30
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Ciclo de vida
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Ahora
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Revisada por
PublicadoISO 8660:2002