Standard

ISO 9397:1995

Tilbaketrukket

Rettelser og tillegg kjøpes separat.

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Omfang

Cancels and replaces the first edition (1989). Lays down a method of chemically determining free formaldehyde in phenolic resins by potentiometric titration, in aqueous or organic solution. The method is applicable to resins with free-formaldehyde contents up to and including 15 % (m/m). For free-formaldehyde contents between 15 % (m/m) and 30 % (m/m), it may be necessary to adjust the concentrations of the standard volumetric solutions used accordingly. This method must not be used in the presence of hexamethylenetetramine.

Dokumentinformasjon

  • Standard fra ISO
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 2
  • Versjon: 1
  • Varetype: IS
  • ICS 83.080.10
  • ISO TC ISO/TC 61/SC 12

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