Withdrawn
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.
WITHDRAWN
ISO 1390-3:1977
95.99
Withdrawal of Standard
May 27, 2002
Maleic anhydride for industrial use — Methods of test — Part 3: Determination of free acidity — Potentiometric method
95.99 Withdrawal of Standard