ISO 1389-4:1977 PDF
Phthalic anhydride for industrial use — Methods of test — Part 4: Measurement of colour after treatment with sulphuric acid
Название (английский):
ISO 1389-4:1977
Phthalic anhydride for industrial use — Methods of test — Part 4: Measurement of colour after treatment with sulphuric acid
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 февраля 1977 г.
- Издание:
- ISO IS 1389 edition 1 version 1
- ICS:
- 71.080.50
Описание (английский):
The test sample is treated with sulphuric acid solution in a conical flask in boiling water bath for 3 h. The colour is measured by the method specified in ISO 2211. The results are expressed in Hazen units. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 1389-4:1977