International Standard
ISO 3681:2018
Binders for paints and varnishes — Determination of saponification value — Titrimetric method
Reference number
ISO 3681:2018
Edición 4
2018-11
International Standard
Vista previa
ISO 3681:2018
73849
No disponible en español
Publicado (Edición 4, 2018)

ISO 3681:2018

ISO 3681:2018
73849
Idioma
Formato
CHF 63
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 2018-11
    : Cierre de la revisión [90.60]
  •  : 4
     : 7
  • ISO/TC 35
    87.060.20 
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