NF EN ISO 3681

NF EN ISO 3681

July 1998
Standard Cancelled

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

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Main informations

Collections

National standards and national normative documents

Publication date

July 1998

Number of pages

10 p.

Reference

NF EN ISO 3681

ICS Codes

87.060.20   Binders

Classification index

T30-401

Print number

1 - 14/10/2005

International kinship

ISO 3681:1996

European kinship

EN ISO 3681:1998
Replaced standards (1)
NF T30-401
April 1976
Standard Cancelled
Paint media. Determination of saponification value.

Standard replaced by (1)
NF EN ISO 3681
December 2018
Standard Current
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 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.

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