ISO 2868:1973
ISO 2868:1973



The sample is hydrolyzed by refluxing under acid conditions. The non-hydrolyzable anionic-active matter is determined by the direct two-phase titration procedure describes in ISO 2271. This method is applicable to the determination of cyclic sulphonates in alkylphenol ether sulphates and of small amounts of sulphonates in sulphated fatty alcohols. The molar mass of the anionic matter must be known or previously determined, if its content is expressed as percentage by mass.

General information 

  •  :  Published
     : 1973-12
  •  : 1
     : 2
  •  : ISO/TC 91 Surface active agents
  •  :
    71.100.40 Surface active agents

Buy this standard

Format Language
std 1 40 PDF
std 2 40 Paper
  • CHF40

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)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.