Standard

ISO 2997:1974

Nov 1974 Published

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Abstract

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.

Document information

Standard from ISO
Published: 1 November 1974
Edition: 1
Version: 1
Document type: IS
ISBN:

ICS 71.060.30
ISO TC ISO/TC 47

Product Relations

Referred by: NS-EN 1197:2006
Referred by: NS-EN 15040:2006
Revises: ISO/R 847:1968

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ISO/R 847:1968
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ISO 2997:1974

ISO 2997:1974

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ISO 2997:1974

ISO/R 847:1968

Abstract

Document information

Product Relations

Product life cycle

Access to standards for the entire organization

Benefits of our business solution:

Contact us today for a non-binding offer

Extended editions Extended editions (0)

Version history Related corrigendum and amendments (0)

Version history History (2)

ISO 2997:1974

ISO/R 847:1968

Abstract

Document information

Product Relations

Product life cycle