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Sodium Nitrate
Sodium Nitrate

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Sodium Nitrate
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Product: Sodium Nitrate

High Quality

Earliest Shipment

Competitive price

Professional Service


Sodium nitrate is the chemical compound with the formula NaNO3. This salt, also known as Chile saltpeter or Peru saltpeter (due to the large deposits found in each country) to distinguish it from ordinary saltpeter, potassium nitrate, is a white solid which is very soluble in water. The mineral form is also known as nitratine, nitratite or soda niter.

Sodium nitrate is used as an ingredient; in fertilizers, pyrotechnics, as an ingredient in smoke bombs, as a food preservative, and as a solid rocket propellant, as well as in glass and pottery enamels. The compound has been mined extensively for those purposes.



Sodium nitrateIdentifiersPropertiesStructureThermochemistryHazardsRelated compounds
IUPAC name[hide]Sodium nitrate
Other names[hide]Caliche
Chile saltpeter
Nitrate of soda
Peru saltpeter
Soda niter
cubic niter
CAS number7631-99-4 Y
ChemSpider22688 Y
UN number1498
RTECS numberWC5600000
Jmol-3D imagesImage 1
[show]InChI=1S/NO3.Na/c2-1(3)4;/q-1;+1 Y
Key: VWDWKYIASSYTQR-UHFFFAOYSA-N Y InChI=1/NO3.Na/c2-1(3)4;/q-1;+1
Molecular formulaNaNO3
Molar mass84.9947 g/mol
AppearanceWhite powder or colorless crystals with sweet smell
Density2.257 g/cm3, solid
Melting point

308 °C

Boiling point

380 °C decomp.

Solubility in water730 g/L (0°C)
921 g/L (25 °C)
1800 g/L (100 °C)
Solubilityvery soluble in ammonia; soluble in alcohol
Refractive index (nD)1.587 (trigonal)
1.336 (rhomobohedral)
Crystal structuretrigonal and rhombohedral
Std enthalpy of
formation ΔfHo298
−468 kJ/mol
Standard molar
entropy So298
117 J·mol−1 K−1
EU IndexNot listed
Main hazardsOxidant, irritant
NFPA 704010OX
Flash pointNon-flammable
LD503236 mg/kg
Other anionsSodium nitrite
Other cationsLithium nitrate
Potassium nitrate
Rubidium nitrate
Caesium nitrate
Related compoundsSodium sulfate
Sodium chloride

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