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Norm

ISO 3681:2018

Issue date: 2018 11 07

Binders for paints and varnishes — Determination of saponification value — Titrimetric method

This document specifies a titrimetric method for determining the esterified-acid content in binders for paints and varnishes, free acids and acid anhydrides being necessa...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 7 Pages
Language:
English

This document specifies a titrimetric method for determining the esterified-acid content in binders for paints and varnishes, free acids and acid anhydrides being necessarily included in the result obtained.

Because different binders vary in their resistance to saponification, this document is of limited applicability. If necessary, completeness of saponification can be checked by repeating the test under more severe conditions achieved by the use of longer saponification time, more concentrated potassium hydroxide solution, or a higher-boiling alcohol as solvent.

Annex A specifies a procedure suitable for binders that saponify with difficulty.

The method is not applicable to those materials that show further reaction with alkalis beyond normal saponification.

ISO 3681:2018
2018 11 07
Binders for paints and varnishes — Determination of saponification value — Titrimetric method
Norm
ISO 3681:1996
1996 06 06
Binders for paints and varnishes — Determination of saponification value — Titrimetric method
Norm
ISO 3681:1983
1983 03 01
Binders for paints and varnishes — Determination of saponification value — Titrimetric method
Norm