Acid inorganic acid na kowa, phosphoric acid ba shi da sauƙin canzawa, ba sauƙi bazuwa, kusan babu oxidation, tare da gama gari acid, acid mai rauni ne na ternary, acidity ɗinsa ya fi ƙarfin hydrochloric acid, sulfuric acid, nitric acid, amma ya fi acetic ƙarfi. acid, boric acid, da dai sauransu. Phosphoric acid yana cikin sauƙi a cikin iska, kuma zafi zai rasa ruwa don samun pyrophosphoric acid, sannan ya kara rasa ruwa don samun metaphosphate.