This paper discusses three modern titrimetric technologies that can be used to help characterize polyols used in the polyurethanes manufacturing industry and some supporting technologies that are new to the analytical scene. The hydroxyl number/molecular weight, the acid/base balance, and moisture content of the polyol can have a profound effect on the formation of and final characteristics of the finished urethane polymer. In addition to the presentation of relatively simple, robust procedures for these three quality parameters, electrode choice, electrode filling solutions, and electrode storage solutions are discussed. The concept of dynamic solution standardization is also presented, as well as a short discussion of a stable, maintenance free low level moisture QC sample that can be used in both volumetric and coulometric titrators.
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