Sodium carbonate

Properties

General
Name	Sodium carbonate
Chemical formula	Na2CO3
Appearance	White solid
Physical
Formula weight	106.0 amu
Melting point	1124 K (851 °C)
Boiling point	Decomposes at ?
Density	2.5 ×103 kg/m3
Crystal structure	?
Solubility	10.9 g in 100g water
Thermochemistry
ΔfH0liquid	-1102 kJ/mol
ΔfH0solid	-1131 kJ/mol
S0liquid, 1 bar	? J/mol·K
S0solid	135 J/mol·K
Safety
Ingestion	May cause irritation.
Inhalation	Harmful, should be avoided especially in the long term.
Skin	Irritation and possible burns.
Eyes	Severe irritation, injury may result.
More info	Hazardous Chemical Database
SI units were used where possible. Unless otherwise stated, standard conditions were used. Disclaimer and references

Sodium carbonate or soda ash, Na₂CO₃, is a sodium salt of carbonic acid. It is a white crystalline compound with a cooling alkaline taste, and found in the ashes of many plants. It is produced artificially in large quantities from common salt. It is used in the manufacture of: glass, chemicals such as sodium silicates and sodium phosphates, the pulp and paper industries, the manufacture of detergents and for the treatment of water. It is also used as an alkaline agent in many chemical industries.