Status : Published (Under review)

This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
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Abstract

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.

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General information

  • Status
     : Published
    Publication date
     : 2002-05
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 61/SC 5
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