- Phosphine is prepared by hydrolysing metal phosphide such as Na3P or Ca3P2 with water.
Ca3P2 + 6H2O 2PH3 + 3Ca(OH)2
- White phosphorus on hydrolysis with NaOH solution gives PH3.
P4 + 3NaOH + 3H2O PH3 + 3NaH2PO2
- Phosphine, PH3 is colorless and extremely toxic gas, smalls slightly of garlic or bad fish.
- Phosphine is highly reactive.
- Phosphine unlike NH3 is not very soluble in water.
- PH3 is more soluble in CS2 and other organic solvents.
- PH3 catches fire when heated to about 150C.
PH3 + 2O2 H3PO4