Assertion: hypophosphorous acid | /r/AtLocation | the triethanolamine
Facets:
value: in a suitable container
type: LOCATION
Source sentences:
text: In a suitable container, e.g. stirred container, which may be equipped with a reflux condenser, an effective amount of phosphorous acid (H 3 PO 3 ) and/or hypophosphorous acid (H 3 PO 2 ) and a basic compound chosen from alkali metal hydroxide, alkaline earth metal hydroxide and [R1R2R3(2-hydroxyethyl)ammonium] hydroxide, where R1, R2 and R3 have the meanings given, are added to the triethanolamine whose color quality is to be improved in liquid phase, optionally in the presence of an inert solvent, advantageously with stirring or circulation pumping.