Sodium nitrate

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Sodium nitrate
Chemical formula {{#Chem:NaNO3}}
OTP appearance white crystals 
Molar Mass(g/mol) 85 
Density(g/cc) 2.257 
Melting Point(°C) 308
NFPA 704
0
1
0
OX

 

Thermal Decomposition
sodium nitrate
380°C
{{#Chem: NaNO2, O2}}

Uses

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)
    {{#Chem: HNO3 + NaOH --> NaNO3 + H2O|otp}}
    {{#Chem: HNO3 + NaHCO3 → CO2 + H2O + NaNO3|otp}}
  • Metathesis: Combine sodium carbonate with calcium nitrate, silver nitrate, lead nitrate...
    {{#Chem: Na2CO3(aq) + Ca(NO3)2(aq) --> 2NaNO3(aq) + CaCO3(s)|otp}}

See Also

References