Potassium propanoate or potassium propionate is a chemical compound with the chemical formula K(C2H5COO). It is the potassium salt of propanoic acid.
Preparation Potassium propanoate can be prepared by treating potassium carbonate with propanoic acid.
Use It is used as a food preservative and is represented by the food labeling E number E283 in EuropeUK Food Standards Agency: and by the INS number 283 in Australia and New Zealand.Australia New Zealand Food Standards Code
Reactions Decomposition takes place via ketonization, yielding the symmetric ketone and potassium carbonate: 2K(O2CEt) → K2CO3 + Et(CO)Et
References