Sodium carbonate
Redirected from Soda ash
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.
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 (http://ull.chemistry.uakron.edu/erd/chemicals/8/7741.html)
SI units were used where possible. Unless otherwise stated, standard conditions were used.