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ISO 731-2:1977 PDF
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Formic acid for industrial use — Methods of test — Part 2: Determination of total acidity — Titrimetric method
The principle consists in a titration of a test portion with a standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. ISO/R 731 has been subdivised into seven parts. ISO 731/2 replaces clause 3 of ISO Recommendation R 731-1968.
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| Edition | 1977 |
|---|---|
| Standard Part No | 2 |
| Published Date | 1977 |
| Published By | International Standardization Organisation |
| Page Count | 2 |
