Standard

ISO 2993:1974

Apr 1974 Withdrawn

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Abstract

Applicable to products having a free acidity, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Dissolution of a test portion in Water and titration with standard volumetric sodium hydroxide solution in the presence of an indicator. The indicator must have a colour change in the pH range between 5.2 and 5.6. Has also been approved by the IUPAC.

Document information

Standard from ISO
Published: 1 April 1974
Withdrawn: 30 April 2025
Edition: 1
Version: 1
Document type: IS
ISBN:

ICS 71.060.50
ISO TC ISO/TC 47

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Referred by: NS-EN 12123:2022
Referred by: NS-EN 12123:2012

ISO 2993:1974

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Abstract

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Abstract

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