Phosphine (PH3)

Phosphine (PH3)

Phosphine: (PH3)


  1. Phosphine is prepared by hydrolysing metal phosphide such as Na3P or Ca3P2 with water.

    Ca3P2 + 6H2 2PH+ 3Ca(OH)2

  2. White phosphorus on hydrolysis with NaOH solution gives PH3.

    P4 + 3NaOH + 3H2 PH3 + 3NaH2PO2


  1. Phosphine, PH3 is colorless and extremely toxic gas, smalls slightly of garlic or bad fish.

  2. Phosphine is highly reactive.

  3. Phosphine unlike NHis not very soluble in water.

  4. PH3 is more soluble in CS2 and other organic solvents.

  5. PH3 catches fire when heated to about 150C.

    PH3 + 2O2  H3PO4

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