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ISO 4326:1980 PDF

ISO 4326:1980 PDF

Name:
ISO 4326:1980 PDF

Published Date:
03/01/1980

Status:
Active

Description:

Non-ionic surface active agents -- Polyethoxylated derivatives -- Determination of hydroxyl value -- Acetic anhydride method

Publisher:
International Organization for Standardization

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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$16.2
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The hydroxyl group is esterified by acetic anhydride in pyridine solution. The excess of acetic anhydride is hydrolized with water. The acidity which appears during the esterification and the acetic acid formed during the hydrolysis are neutralized by sodium hydroxide solution in the presence of phenolphthalein as indicator. The hydroxyl value is calculated from the difference between the volume od sodium hydroxide solution used for the titration of the blank and of the test solution.


File Size : 1 file , 1.1 MB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 3
Published : 03/01/1980
Same As : ISO 4326:1980

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