Plastics — Polyols for use in the production of polyurethanes — Determination of basicity (total amine value), expressed as percent nitrogen
NORMA vydána dne 14.2.2014
Označení normy: ISO 25761:2014-ed.2.0
Datum vydání normy: 14.2.2014
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: The method specified in ISO 25761:2014 measures the basic constituents in polyols that are soluble in glacial acetic acid and reactive with perchloric acid. Samples containing 0,3 % to 10 % of nitrogen have been evaluated by this method. The method is applicable to amine-based polyols, polyether polyols and polyether polyol blends that are used in polyurethane reactions. The results are measures of batch-to-batch uniformity and may be used to estimate reactivity in polyurethane reactions.