Product Name
Potassium carbonate
Category
Metal & Ceramic Materials
Description
Potassium carbonate (K2CO3) is a white salt, soluble in water (insoluble in ethanol) which forms a strongly alkaline solution. It can be made as the product of potassium hydroxide’s absorbent reaction with carbon dioxide. It is deliquescent, often appearing a damp or wet solid. Potassium carbonate is used in the production of soap and glass.
Synonyms
Dipotassium cabonate
IUPAC Name
Dipotassium;carbonate
Canonical SMILES
C(=O)([O-])[O-].[K+].[K+]
InChI
InChI=1S/CH₂O3.2K/c2-1(3)4;/h(H2,2,3,4);/q;2*+1/p-2
InChI Key
BWHMMNNQKKPAPP-UHFFFAOYSA-L
Density
2.43 g/mL at 25 °C (lit.)
Solubility
Very soluble in water, insoluble in ethanol
Storage
Store at +5 °C to +30 °C
Color/Form
Colorless cubic crystals; hygroscopic;Granules or granular powder;White, deliquescent, granular, translucent powder
Covalently-Bonded Unit Count
3
Decomposition
When heated to decomposition it emits toxic fumes of K2O.
EC Number
209-529-3;209-529-3
Monoisotopic Mass
137.91215683
Other Experimental
Hygroscopic;Enthalpy of fusion: 27.60 kJ/mol at 899 °C;Decomposes on heating with CO2 loss.;Deliquesces in moist air;K2CO3 forms several hydrates, of which K2CO3.1.5H₂O is the stable phase in contact with the saturated solution from 0 °C to about 110 °C.;Granular crystals; solubility 111 g/100 g water at 20 °C /Potassium carbonate sesquihydrate/;When it contains the full amount of water (16.36%) it is not hygroscopic. The aqueous solution is strongly alkaline. /Potassium carbonate sesquihydrate/
Stability
Stable. Incompatible with moisture, acids, magnesium bromine trifluoride and magnesium bromine trichloride.
Storage Conditions
Store at RT.
Topological Polar Surface Area
63.2 Ų