Automated determination of the hydroxyl number according to ASTM E1899

The hydroxyl group is an important functional group and knowledge of the hydroxyl number, i.e. the hydroxyl group content, is required for the production of intermediate and finished products such as polyols, resins, paint resins and lubricants (petroleum industry).

ASTM E1899 describes a rapid, pyridine-free method, which can be carried out at room temperature. The fully automated determination according to ASTM E1899 is described in this Application Note.