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Methods based on capillary electrophoresis (CE) have been developed to obtain the molar mass distribution (MMD) of glycerin-based polyols and details on the presence of mono- and difunctional byproducts in technical samples. Prior to the analyses the hydroxy end-groups of the trifunctional polyols were converted to chargeable and UV-active moieties with phthalic anhydride (PhAH) as the derivatization...