DOI: 10.1177/026248938600500503 ISSN:
Determination of Average Molecular Mass of Polyols by Freezing Point Depression: Method to Avoid Interference by Water
Klára Parlagh Huszár, Mária Pásztor- Organic Chemistry
- Polymers and Plastics
The determination of MM of polyols by gel permeation chromatography is not always applicable, especially for the range 500–1500. The paper outlines a method using freezing point depression in acetophenone and since both this solvent and most polyols are hygroscopic, the interference by residual and entrained moisture is overcome by the use of a 4A type molecular sieve.