ISO 2522:1974
Tritolyl phosphate for industrial use; Determination of apparent free phenols content; Volumetric method
- Standard No.
- ISO 2522:1974
- Release Date
- 1974
- Published By
- International Organization for Standardization (ISO)
- Status
- 2002-05
- Latest
- ISO 2522:1974
- Scope
- The method specified determines only those phenols capable of reacting at the 2nd, 4th and 6th position (-OH = 1). The procedure consists in extraction of free phenols from a test portion with sodium hydroxide solution. Bromination of these phenols with potassium bromide-bromate solution in an acid medium and determination of the excess bromine after reaction with potassium iodide by titration with standard volumetric sodium thiosulphate solution.
ISO 2522:1974 history
- 1974 ISO 2522:1974 Tritolyl phosphate for industrial use; Determination of apparent free phenols content; Volumetric method
