in chloroform; water byproducts: PH3; stirring on slight warming (ground temp. 44°C, surface temp. 37°C) for ca 80 hours; after storage for 24 hours decantation of clear layer, saturating with CO2, filtration;; vaporization in vac.;;
in water byproducts: PH3; addn. of 600 ml H2O to 120 g CaO, addn. of 20 g crushed, yellow P at boiling heat, boiling for 8-10 hours with replacement of vaporized H2O; introduction of CO2 into filtrate at 70-80°C; filtration after short boiling; vaporization till crystn.;; recrystn. from 3-4 parts H2O; yield 18-22 g pure Ca(PH2O2)2;;
in neat (no solvent) byproducts: P, calcium phosphate; calcination in retort; first small amt. of H2O and PH3, later sublimation of small amt. of P with formation of calcium phosphate;;
in water byproducts: cadmium calcium phosphinite;; boiling an excess of Cd-oxalate with Ca-phosphinite in water; formation of crystals of cadmium calcium phosphinite by evaporation of the filtrate;; cadmium calcium phosphinite was not isolated; decomposition on heating under evolution of PH3;;
