Sodium nitrate

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Sodium nitrate
Chemical formula NaNO3
OTP appearance white crystals 
Molar Mass(g/mol) 85 
Melting Point(°C) 308 
Density(g/cc) 2.257
NFPA 704
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OX

 

Thermal Decomposition
sodium nitrate
380°C
NaNO2,O2

Uses

Justification Questioned

Other

Natural occurrence

  • Sodium nitrate occurrs naturally as chilean saltpeter

Hazards

  • LD50 is 3.6g/kg (inhaled)

Production

Synthesis

  • Neutralize nitric acid with sodium salt (sodium hydroxide, sodium bicarbonate)
    HNO3 + NaOH NaNO3 + H2O
    HNO3 + NaHCO3 CO2 + H2O + NaNO3
  • Metathesis: Combine sodium carbonate with calcium nitrate, silver nitrate, lead nitrate...
    Na2CO3(aq) + Ca(NO3)2(aq) 2 NaNO3(aq) + CaCO3(s)

See Also

References