Reference number
ISO 731-2:1977
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
1977-02
Retirada
Resumen
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.