ISO 731-3:1977 PDF
Formic acid for industrial use — Methods of test — Part 3: Determination of content of other acids — Potentiometric method
Open preview (PDF)Formic acid for industrial use — Methods of test — Part 3: Determination of content of other acids — Potentiometric methodTitle (English):
ISO 731-3:1977
Formic acid for industrial use — Methods of test — Part 3: Determination of content of other acids — Potentiometric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- February 1, 1977
- Edition:
- ISO IS 731 edition 1 version 1
- ICS:
- 71.080.40
Description (English):
The principle consists in a quantitative oxidation of the formic acid in a test portion with excess mercury(II) oxide. Potentiometric titration of the residual acids with standard volumetric sodium hydroxide solution. The method is applicable to products containing 0,5 to 6,0 % (m/m) of other acids, expressed as acetic acid. ISO/R 731 has been subdivised into seven parts. ISO 731/3 replaces clause 4 of ISO Recommendation R 731-1968.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 731-3:1977
