ISO 1389-3-1977 标准详情
- 标准号:ISO 1389-3-1977
- 中文标题:工业用邻苯二甲酸酐.试验方法.第2部分:颜色稳定性的测定
- 英文标题:(withdrawn)phthalic anhydride for industrial use - methods of test - part iii: measurement of colour stability first edition
- 标准类别:国际标准化组织标准ISO
- 发布日期:1977-01-01
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, controll
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