ISO 1389-7:1977 PDF
Phthalic anhydride for industrial use — Methods of test — Part 7: Determination of maleic anhydride content — Polarographic method
Open preview (PDF)Phthalic anhydride for industrial use — Methods of test — Part 7: Determination of maleic anhydride content — Polarographic methodTitle (English):
ISO 1389-7:1977
Phthalic anhydride for industrial use — Methods of test — Part 7: Determination of maleic anhydride content — Polarographic method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 3
- Publication date:
- February 1, 1977
- Edition:
- ISO IS 1389 edition 1 version 1
- ICS:
- 71.080.50
Description (English):
The principle consists in the dissolution of a test portion in acetone, removal of 1,4-naphthoquinone present in the solution by extraction with benzene. Polarographic measurement of the aqueous solution and determination of the mass of maleic anhydride by means of the calibration graph. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 1389-7:1977
