Calcium acetate is a chemical that is primarily a calcium salt of acetic acid. It is also known as acetate of lime. The formula of calcium acetate is C4H6CaO4. Even though this compound is commonly known as calcium acetate, it IUPAC registered name is calcium ethanoate.Moreover, calcium acetate is colourless, and it is a white crystalline solid, which smells slightly like acetic acid. It is soluble in water and alcohol but insoluble in acetone and benzene. This compound is strongly hygroscopic when it is in its anhydrous form and arrives as monohydrate in its regular form.Furthermore, this chemical can be gathered by soaking calcium carbonate in a vinegar solution. Calcium acetate has not been found yet as a free compound in nature. Moreover, it is mainly used in producing various medicines, food additive, sequestrate, buffer, etc.

In kidney disease, blood levels of phosphate may rise (called hyperphosphatemia) leading to bone problems. Calcium acetate binds phosphate in the diet to lower blood phosphate levels.

Calcium acetate is used as a food additive, as a stabilizer, buffer and sequestrant, mainly in candy products under the number E263.

Tofu is traditionally obtained by coagulating soy milk with calcium sulfate. Calcium acetate has been found to be a better alternative; being soluble, it requires less skill and a smaller amount.Because it is inexpensive, calcium acetate was once a common starting material for the synthesis of acetone before the development of the cumene process.

A saturated solution of calcium acetate in alcohol forms a semisolid, flammable gel that is much like "canned heat" products such as Sterno. Chemistry teachers often prepare "California Snowballs", a mixture of calcium acetate solution and ethanol.The resulting gel is whitish in color, and can be formed to resemble a snowball.