Norm

NEN-EN-ISO 3681:1998 en

Bindmiddelen voor verven en vernissen - Bepaling van het verzepingsgetal - Titrimetrische methode

31,57

Over deze norm

Status Definitief
Aantal pagina's 5
Commissie Verfwaren
Gepubliceerd op 01-06-1998
Taal Engels
Specifies a titrimetric method for determining the estirified-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 standard is of limited applicapability, 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. The method is not applicable to those materials that show further reaction with alkalis beyond normal saponification.

Details

ICS-code 87.060.20
Nederlandse titel Bindmiddelen voor verven en vernissen - Bepaling van het verzepingsgetal - Titrimetrische methode
Engelse titel Binders for paints and varnishes - Determination of saponification value - Titrimetric method
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