719659

ISO 684:1974

Analysis of soaps -- Determination of total free alkali

standard by International Organization for Standardization , 11/01/1974

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Full Description

The soap is dissolved in an ethanolic solution, the free alkali is neutralized with a known excess of sulphuric acid solution and the excess acid is titrated with ethanolic potassium hydroxide solution. The method is not applicable if the soap cantains additives (alkali, silicates, etw.) which can be decomposed by sulphuric acid by the procedure specified. The method is also not applicable to coloured soaps if the colour interferes with the phenolphthalein end point.

 

Product Details

Published:
11/01/1974
Number of Pages:
2
File Size:
1 file , 200 KB
Same As:
BS 1715-2.2:1989
Note:
This product is unavailable in Ukraine, Russia, Belarus