ISO 2522:1974 PDF
Tritolyl phosphate for industrial use — Determination of apparent free phenols content — Volumetric method
Open preview (PDF)Tritolyl phosphate for industrial use — Determination of apparent free phenols content — Volumetric methodTitle (English):
ISO 2522:1974
Tritolyl phosphate for industrial use — Determination of apparent free phenols content — Volumetric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- April 1, 1974
- Edition:
- ISO IS 2522 edition 1 version 1
- ICS:
- 71.080.70
Description (English):
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.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 2522:1974
