2024-02-06 Potassium carbonate, white crystalline powder. Density 2.428g/cm3. Melting point of 891 ℃, decomposition at boiling point, relative molecular weight of 138.21. Soluble in water, the aqueous solution is alkaline, insoluble in ethanol, acetone, and ether. Strong hygroscopicity, can absorb carbon dioxi