ISO 4325:1990
International Standard
Current Edition
·
Approved on
19 April 1990
Soaps and detergents — Determination of chelating agent content — Titrimetric method
ISO 4325:1990 Files
English
2 Pages
Current Edition
20.95 OMR
ISO 4325:1990 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.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 150-2:2013
GSO 150-2:2013
Omani Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 2055-1:2015
GSO 2055-1:2015
Omani Standard
HALAL FOOD - Part 1 : General Requirements
GSO 2055-1:2015
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements
Recently Published
ISO 3095:2025
International Standard
Railway applications — Acoustics — Measurement of noise emitted by railbound vehicles
ISO 16681:2025
International Standard
Ships and marine technology — Pilot transfer arrangements — Ship hull securing equipment
ISO 10280:2025
International Standard
Steel and iron — Determination of titanium content — Diantipyrylmethane spectrophotometric method
ISO 37009:2025
International Standard
Conflict of interest in organizations — Guidance