Reference number
ISO 6387:1983
International Standard
ISO 6387:1983
Surface active agents — Determination of the power to disperse calcium soap — Acidimetric method (Modified Schoenfeldt method)
Edition 1
1983-02
Preview
ISO 6387:1983
12721
No disponible en español
Publicado (Edición 1, 1983)
Esta publicación se revisó y confirmó por última vez en 2019. Por lo tanto, esta versión es la actual.

ISO 6387:1983

ISO 6387:1983
12721
Idioma
Formato
CHF 42
Convertir Franco suizo (CHF) a tu moneda

Resumen

A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixture is maintained for 1 h at the testing temperature and then the calcium soap present in a aliquot portion of the lower layer is titrated with a standard volumetric solution of hydrochloric acid in the presence of bromcresol green as indicator.

Informaciones generales

  •  : Publicado
     : 1983-02
    : Cierre de la revisión [90.60]
  •  : 1
     : 3
  • ISO/TC 91
    71.100.40 
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