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ISO 4325:1990

Soaps and detergents — Determination of chelating agent content — Titrimetric method
19. 4. 1990.

Опште информације

90.93     30. 8. 2022.

ISO

ISO/TC 91

Međunarodni standard

71.100.40  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 4325:1977

TRENUTNO

OBJAVLJEN
ISO 4325:1990
90.93 Odluka o potvrđivanju standarda
30. 8. 2022.

Nacionalna preuzimanja

SRPS ISO 4325:2014  
ISS

Sapuni i detergenti — Određivanje sadržaja helatnog sredstva — Titrimetrijska metoda

90.93   Odluka o potvrđivanju standarda

H091 Saznaj više