ISO 1389-5:1977 PDF
Phthalic anhydride for industrial use — Methods of test — Part 5: Determination of free acidity — Potentiometric method
Open preview (PDF)Phthalic anhydride for industrial use — Methods of test — Part 5: Determination of free acidity — Potentiometric methodTitle (English):
ISO 1389-5:1977
Phthalic anhydride for industrial use — Methods of test — Part 5: Determination of free acidity — Potentiometric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- February 1, 1977
- Edition:
- ISO IS 1389 edition 1 version 1
- ICS:
- 71.080.50
Description (English):
The principle of the method consists in the potentiometric titration of a test portion not exceeding 10 g and containing not more than 0.150 g of phthalic acid, with a standard volumetric solution of triethylamine in anhydrous butanone. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 1389-5:1977
