Resumen
This International Standard specifies a spectrometric method for the determination of the permanganate absorption number of caprolactam for industrial use. The permanganate absorption number is a measure of the oxidizable impurities in caprolactam, determined in a buffered neutral aqueous medium under fixed conditions.
The method is applicable to purified caprolactam (and intermediates in the caprolactam purification process) with an alkalinity or acidity lower than 0,50 mmol/kg and a PAN value of up to 35.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2002-05Etapa: Norma Internacional confirmada [90.93]
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Edición: 2Número de páginas: 6
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Comité Técnico :ISO/TC 61/SC 5
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Ciclo de vida
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Anteriormente
RetiradaISO 8660:1988
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Ahora