ISO 684:1974
p
ISO 684:1974
4879

Status : Published (Under review)

This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
en
Format Language
std 1 42 PDF
std 2 42 Paper
  • CHF42
Convert Swiss francs (CHF) to your currency

Abstract

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.

Read sample 

Preview this standard in our Online Browsing Platform (OBP)

General information

  •  : Published
     : 1974-11
    : International Standard confirmed [90.93]
  •  : 1
     : 2
  • ISO/TC 91
    71.100.40 
  • RSS updates

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)