https://www.sigmaaldrich.com/US/en/product/sigald/214906
Hypophosphorous acid 50wt. water 6303-21-5
Hypophosphorous acid solution 50 wt. % in H2O; CAS Number: 6303-21-5; Synonyms: Phosphinic acid; Linear Formula: H3PO2 at Sigma-Aldrich
hypophosphorous acidwater6303215