It can also be used as an anti icing substance to replace chlorides such as calcium chloride and magnesium chloride. It has less erosive and corrosive effects on soil, and is particularly suitable for de icing airport runways, but it is more expensive. Food additives (anti-corrosion and acidity control). The components of the fire extinguisher. Used in ethanol precipitation of DNA. Used for preserving and fixing biological tissues, combined with formaldehyde. Potassium acetate can be prepared by acid-base neutralization reaction between potassium hydroxide or potassium carbonate and acetic acid