Potassium carbonate CAS#584-08-7
High Solubility in Water – Potassium carbonate dissolves readily in water, forming a strongly alkaline solution suitable for various chemical applications.
Strong Alkalinity – Its aqueous solutions have strong alkaline properties, making it useful in pH regulation, buffering, and industrial processes.
Versatile Physical Forms – Available as a white powder or colorless crystalline solid, allowing flexibility in handling, storage, and formulation.
Chemical Stability in Organic Solvents – Insoluble in organic solvents such as ethanol, which can be advantageous in processes requiring selective solubility.
Products Description of Potassium Carbonate CAS#584-08-7
Potassium carbonate (molecular formula: K2CO3), also known as potash or pearl ash, appears as a white powder or colorless crystalline solid with a salty taste and deliquescent nature. It readily dissolves in water, forming a strongly alkaline solution, but is insoluble in organic solvents such as ethanol.
Parameters
| Melting point | 891 °C (lit.) |
| Boiling point | decomposes [STR93] |
| bulk density | 750kg/m3 |
| density | 2.43 g/mL at 25 °C |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| pka | 10.33[at 20 ℃] |
| form | powder |
| color | Yellow |
| Specific Gravity | 2.29 |
| Odor | at 100.00?%. odorless |
| PH | 10.52(1 mM solution);11(10 mM solution);11.36(100 mM solution); |
| Water Solubility | 1120 g/L (20 ºC) |
| λmax | λ: 260 nm Amax: 0.03 |
| λ: 280 nm Amax: 0.02 | |
| Sensitive | Hygroscopic |
| Merck | 147,619 |
| BRN | 4267587 |
| Dielectric constant | 5.6（16.0℃） |
| Stability: | Stable. Incompatible with moisture, acids, magnesium bromine trifluoride and magnesium bromine trichloride. |
| CAS DataBase Reference | 584-08-7(CAS DataBase Reference) |
| NIST Chemistry Reference | Dipotassium carbonate(584-08-7) |
| EPA Substance Registry System | Potassium carbonate (584-08-7) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38-20/21/22 |
| Safety Statements | 26-36-37/39 |
| RIDADR | 3262 |
| WGK Germany | 1 |
| RTECS | TS7750000 |
| F | 3 |
| TSCA | Yes |
| PackingGroup | III |
| HS Code | 28364000 |
| Hazardous Substances Data | 584-08-7(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 1.87 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969) |
Product Application of Potassium Carbonate CAS#584-08-7
Potassium carbonate is used in the production of optical glass, enhancing the material’s transparency, strength, and refractive index. It can also serve as a coating for welding rods to prevent arc interruptions during welding. Additional applications include its use in VAT dyes, as a de-whitening agent in ice dyeing, and as an absorbent for removing carbon dioxide and hydrogen sulfide. It can also be combined with soda ash to manufacture dry powder fire extinguishing agents.
