ISO 2522:1974 PDF
Tritolyl phosphate for industrial use — Determination of apparent free phenols content — Volumetric method
Название (английский):
ISO 2522:1974
Tritolyl phosphate for industrial use — Determination of apparent free phenols content — Volumetric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 апреля 1974 г.
- Издание:
- ISO IS 2522 edition 1 version 1
- ICS:
- 71.080.70
Описание (английский):
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.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 2522:1974