Standard

ISO 4581:1994

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Abstract

The principle of the method specified is dissolving a test portion in dimethylformamide and injecting a small volume of the solution into a gas chromatograph equipped with flame ionization detector to separate and detect the volatile components. The solvent contains a known amount of propionitrile or acetonitrile as an internal standard for quantitative evaluation. With this method, a lower detection limit of the order of 3 ppm of acrylonitrile in the copolymer may be expected. To obtain a lower detection limit of the order of 0,3 ppm to 0,4 ppm, an alternative method is specified in annex A.

Document information

  • Standard from ISO
  • Published:
  • Edition: 2
  • Version: 1
  • Document type: IS
  • ICS 83.080.20
  • ISO TC ISO/TC 61/SC 9

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