Phosphorus pentoxide

 

Phosphorus pentoxide

Chemical formula	P4O10
OTP appearance	white deliquescent powder
Molar Mass(g/mol)	283.9
Density(g/cc)	2.39
Melting Point(°C)	340
Boiling Point(°C)	360 (sublimes)
Solubility in water(g/L)	reacts (H3PO4)
NFPA 704	0 3 3 W

Uses

Primary

• Feedstock for key mineral acid phosphoric acid

Natural occurrence

• Does not occur naturally in isolable quantities.

Hazards

• Toxic
• Corrosive

Production

Synthesis

• Burn phosphorus in air, producing phosphorus pentoxide

  P₄ + 5 O₂

  {air

  →

  }

  P₄O₁₀

Storage

• Airtight and watertight corrosion-resistant containers

Disposal

• Convert to phosphoric acid and react with calcium carbonate yielding calcium phosphate