Standard

ISO 2997:1974

Publisert

Rettelser og tillegg kjøpes separat.

Språk
Tjenester

Omfang

Applicable to products having sulphate contents equal to or more than 0.0005 % (m/m). Analysis by reduction of the sulphate to sulphide by a mixture of hydriodic acid and hypophosphorus acid. Absorption of the hydrogen sulphide evolved in a mixture of acetone and sodium hydroxide solution. Titration with a standard volumetric solution of mercury(II) acetate in the presence of dithizone as indicator. Has also been approved by the IUPAC.

Dokumentinformasjon

  • Standard fra ISO
  • Publisert:
  • Utgave: 1
  • Versjon: 1
  • Varetype: IS
  • ICS 71.060.30
  • ISO TC ISO/TC 47

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