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SRPS ISO 4325:2014

Soaps and detergents — Determination of chelating agent content — Titrimetric method

Feb 28, 2014

General information

90.93     Aug 30, 2022

90.20    Jul 15, 2027

ISS

H091

International Standard

71.100.40  

English  

Plan za 2013. godinu.

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Scope

A test portion of the sample is dissolved in water, the pH of the solution adjusted to 4.65 and the solution titrated against standard copper(II) sulphate solution using 1-(2-pyridylazo)-2-naphthol as indicator. Principally the method has been designed principally for determining ethylenediaminetetraacetic acid (EDTA) and it salts. Before determining other chelating agents, or determining ethylenediaminetetraacetic acid in the presence of other chelating agents, the applicability of the method should be confirmed.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS ISO 4325:1993

NOW

PUBLISHED
SRPS ISO 4325:2014
90.93 Standard confirmed
Aug 30, 2022

Related project

Adopted from ISO 4325:1990