Home

Subscribe to updates

ISO 684:1974

Analysis of soaps -- Determination of total free alkali

This standard has been reviewed and then confirmed in 2010 
More information

ISO standards are reviewed every five years

Close

Media and price

Format Price Language
PDF CHF 38,00 Add to basket
Paper CHF 38,00 Add to basket

 

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.

 

  • Edition: 1 (Monolingual) ICS: 71.100.40
    Status: Published Stage: 90.93 (2010-08-10)
    TC/SC: ISO/TC 91 Number of Pages: 2
  • No revision information available

  • No corrigenda or amendments available

Preview and follow ISO 684:1974 on our Online Browsing Platform

Preview


Contact customer services

Send your enquiry by email
or call us on +41 22 749 08 88
09:00 – 12:30, 14:00 – 17:00 (UTC+1).

Related standards

Standards in the same category (71.100.40)
Standards from the same committee