1868 H. B. Jones & H. Watts (ed. 10) 233 Phosphorus Trihydride..is analogous in some of its chemical relations to ammoniacal gas.
1921 43 405 The dissociation of phosphorus trihydride at temperatures above 920°Å.
1995 22 Apr. 1044 Organophosphates generating lighter phosphine (phosphorus trihydride) are still in use in some coverings and fillings.