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ISO 6387:1983

Surface active agents — Determination of the power to disperse calcium soap — Acidimetric method (Modified Schoenfeldt method)
1. 2. 1983.

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90.93     7. 12. 2024.

ISO

ISO/TC 91

Međunarodni standard

71.100.40  

francuski   engleski  

Kupovina

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Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 6387:1983
90.93 Odluka o potvrđivanju standarda
7. 12. 2024.

Nacionalna preuzimanja

SRPS ISO 6387:1993  
ISS

Površinski aktivne materije - Određivanje sposobnosti dispergovanja kalcijumovog sapuna - Acidimetrijska metoda (modifikovana metoda po Šenfeldu) (identičan sa ISO 6387:1983)

90.93   Odluka o potvrđivanju standarda

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