ISO 1389-3:1977 PDF
Phthalic anhydride for industrial use — Methods of test — Part 3: Measurement of colour stability
Phthalic anhydride for industrial use — Methods of test — Part 3: Measurement of colour stability
- 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
The principle is based on the measurement of the colour of a test portion, by the method specified in ISO 2211, after a specified heat treatment. The test sample is maintained in a colorimetric tube in an electrically heated aluminium block, controlled at (250 3) °C for 90 min, in the molten state. 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 1389-3:1977
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