Reference number
ISO 1390-3:1977
ISO 1390-3:1977
© ISO 2024
ISO 1390-3:1977
Maleic anhydride for industrial use — Methods of test — Part 3: Determination of free acidity — Potentiometric method
Edition 1
1977-06
1977-06
Retirada
Resumen
The procedure is based on the potentiometric titration of the free acidity in a test portion with a standard volumetric triethylamine solution in anhydrous methyl ethyl ketone (butanone). - ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.