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Salts and minerals

Sodium carbonate vs sodium bicarbonate

Sodium carbonate (CNa2O3, CAS 497-19-8) and sodium bicarbonate (CHNaO3, CAS 144-55-8) are both listed under carbonates and bicarbonates.

Sodium carbonate has a molar mass of 105.99 g/mol, sodium bicarbonate 84.01 g/mol.

Measured melting points are 856 °C for sodium carbonate and Ca. 50 for sodium bicarbonate.

Sodium carbonate carries the GHS signal word Warning, while no signal word is recorded for sodium bicarbonate in our records.

On CompoundList, 820 suppliers list sodium carbonate and 837 suppliers list sodium bicarbonate.

Data last updated 7 October 2026

Sodium carbonate and sodium bicarbonate compared side by side
Sodium carbonate chemical structure, CNa2O3, CAS 497-19-8
Sodium carbonate
Sodium bicarbonate chemical structure, CHNaO3, CAS 144-55-8
Sodium bicarbonate
Identity
Name in our databaseSodium carbonateSodium bicarbonate
CAS number497-19-8144-55-8
Molecular formulaCNa2O3CHNaO3
Molar mass105.99 g/mol84.01 g/mol
IUPAC namedisodium, carbonatesodium hydrogen carbonate
EC number207-838-8205-633-8
Physical properties
AppearanceGrayish-white powder or lumps containing up to 99% sodium carbonateWhite, monoclinic prisms
Melting point856 °CCa. 50
Boiling pointDecomposes on heating by CO2 lossNot recorded
Density2.54 g/cm³2.20 g/cm³
SolubilityIn water, 30.7 g/100 g water at 25 °CIn water, 10.3 g/100 g water at 25 °C
LogP (octanol/water)Computed from the structure-8.44-4.11
Safety (GHS)
Signal wordWarningNone
Pictograms
GHS07: Harmful or irritant
None
Hazard statements
  • H319 Causes serious eye irritation.
No hazard statements recorded
Uses and classification
Uses and functions
  • Acidulants and acidity regulators
  • Leavening and processing aids
  • PH adjusters
  • Acids and alkalis
  • Buffering
  • Bulking
  • Skin conditioning agents
  • Acidulants and acidity regulators
  • Leavening and processing aids
  • PH adjusters
  • Acids and alkalis
  • Additive
CategoryInorganic chemicals › Carbonates and bicarbonatesInorganic chemicals › Carbonates and bicarbonates
HS code283620Disodium carbonate283630Sodium hydrogencarbonate (sodium bicarbonate)
Market on CompoundList
Suppliers820 suppliers837 suppliers
Supplier countries72 countries, most in India, China, United States79 countries, most in India, China, United States
Price rangeOnly prices set by suppliers who manage their own profilePrice on requestPrice on request

Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.

Sodium carbonate
Sodium bicarbonate

More comparisons

Other common chemical pairs, compared the same way.