Potassium carbonate CAS#584-08-7
Highly Soluble in Water: Potassium carbonate dissolves easily in water, forming a strongly alkaline solution, making it ideal for various industrial and chemical processes.
Moisture Absorption: As a hygroscopic compound, it naturally absorbs moisture from the environment, which can be beneficial in certain applications like drying agents.
Versatile Industrial Applications: Commonly used in glass manufacturing, soap production, and as a fertilizer, potassium carbonate serves a wide range of industries.
Insoluble in Organic Solvents: It remains insoluble in organic solvents like ethanol, which allows for selective solubility in aqueous-based applications.
Potassium carbonate (K2CO3), also known as potash or pearl ash, appears as a white powder or colorless crystalline solid with a salty taste and a tendency to absorb moisture. It dissolves easily in water to form a strongly alkaline solution but is insoluble in organic solvents like 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 |
Sensitive | Hygroscopic |
Merck | 14,7619 |
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) |
Potassium carbonate is used in the production of optical glass to improve its transparency, strength, and refractive index. It also serves as a welding rod to prevent arc interruptions during welding. Additional uses include its application as a VAT dye and a de-whitening agent in ice dyeing processes. Furthermore, it functions as an absorbent for carbon dioxide and hydrogen sulfide removal and can be combined with soda ash to create a dry powder fire extinguishing agent.
