719304

ISO 6387:1983

Surface active agents -- Determination of the power to disperse calcium soap -- Acidimetric method (Modified Schoenfeldt method)

standard by International Organization for Standardization , 02/01/1983

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Full Description

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.

 

Product Details

Published:
02/01/1983
Number of Pages:
3
File Size:
1 file , 270 KB
Note:
This product is unavailable in Ukraine, Russia, Belarus