BS 3762-3.23:1990

This standard BS 3762-3.23:1990 Analysis of formulated detergents is classified in these ICS categories:

• 71.100.40 Surface active agents

This International Standard specifies a method of analysis for the determination of the chelating agent content of detergent compositions and soaps containing not more than 2 % (m/m) of chelating agent.

Ethylenediaminetetraacetic acid (EDTA) is one of the most widely used chelating agents and the method has been designed principally for determining this compound and its 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.

Titrimetric method using 1-(2-pyridylazo)-2-naphthol (PAN) as indicator.