2-lmidazolidinone is an organic compound, also known as ethylene urea. It appears as white crystals and is soluble in water and hot ethanol, but insoluble in ether. Currently, the main methods for preparing 2-lmidazolidinone include the ammonium carbonate method, the phosgene method, the carbonate ester method, the urea method and the carbon dioxide method.

Sodium sulfate is a salt formed by the combination of sulfate ions and sodium ions, with the chemical formula of Na₂SO₄. It is soluble in water, and most of its aqueous solutions are neutral. It is soluble in glycerol but insoluble in ethanol.

Sodium carbonate typically exists as a white crystalline powder. As a strong electrolyte, it is readily soluble in water and glycerol, slightly soluble in anhydrous ethanol, and poorly soluble in propanol. It exhibits the general properties of salts and is classified as an inorganic salt.