ISO 1390-3:1977
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Maleic anhydride for industrial use Methods of test Part 3: Determination of free acidity Potentiometric method
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02-23-2019
English, French
06-01-1977
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.
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