DIN EN ISO 3681:2007 PDF

Scope: This international Standard specifies a titrimetric metohd 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 international Standard is of limited applicability.If necessary,completeness of saponification may 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. Themethod is not applicable to those materials that show further reaction with alkalis beyond normal saponification.

DIN EN ISO 3681:2007 Referenced Document

ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
ISO 385-1:1984 Laboratory glassware; Burettes; Part 1 : General requirements
ISO 648:1977 Laboratory glassware; One-mark pipettes
ISO 842:1984 Raw materials for paints and varnishes; Sampling

2019 DIN EN ISO 3681:2019-03 Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:2018); German version EN ISO 3681:2018
2019 DIN EN ISO 3681:2019 Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:2018)
1970 DIN EN ISO 3681 E:2018-02 Titration method for determination of saponification value of adhesives for paints and varnishes (draft)
2018 DIN EN ISO 3681 E:2018 Draft Document - Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO/DIS 3681:2017); German and English version prEN ISO 3681:2017
2008 DIN EN ISO 3681 Berichtigung 1:2008 Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:1996); German version EN ISO 3681:1998, Corrigendum to DIN EN ISO 3681:2007-10
2007 DIN EN ISO 3681:2007 Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:1996); English version of DIN EN ISO 3681:2007-10
1996 DIN EN ISO 3681:1998 Binders for coating materials – Determination of the saponification number – Titrimetric method