Reference number
ISO 731-2:1977
© ISO 2024
ISO 731-2:1977
Formic acid for industrial use — Methods of test — Part 2: Determination of total acidity — Titrimetric method
Edition 1
1977-02
Withdrawn
Withdrawn (Edition 1, 1977)

Abstract

The principle consists in a titration of a test portion with a standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. ISO/R 731 has been subdivised into seven parts. ISO 731/2 replaces clause 3 of ISO Recommendation R 731-1968.

General information

  • Status
     : Withdrawn
    Publication date
     : 1977-02
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.080.40 
  • RSS updates

Life cycle

Got a question?

Check out our Help and Support

  2. Store
  3. Standards catalogue
  4. ICS
  5. 71
  6. 71.080
  7. 71.080.40
  8. ISO 731-2:1977