ISO 1388-4:1981
Ethanol for industrial use; Methods of test; Part 4 : Estimation of content of carbonyl compounds present in moderate amounts; Titrimetric method
- Standard No.
- ISO 1388-4:1981
- Release Date
- 1981
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 1388-4:1981
- Scope
- The method is applicable to products having carbonyl compounds contents equal to or greater than 0.01 % (m/m). The method only allows determination of those carbonyl compounds which react under the specified conditions. The principle is based on the reaction of hydroxylammonium chloride with the carbonyl compounds in a test portion and titration of the hydrochloric acid formed with standard volumetric sodium hydroxide solution, in the presence of bromophenol blue as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
ISO 1388-4:1981 history
- 1981 ISO 1388-4:1981 Ethanol for industrial use; Methods of test; Part 4 : Estimation of content of carbonyl compounds present in moderate amounts; Titrimetric method
