Citric acid is a weak organic acid. It is a natural preservative and is also used to add an acidic, or sour, taste to foods and soft drinks. In biochemistry, it is important as an intermediate in the citric acid cycle and therefore occurs in the metabolism of virtually all living things. It can also be used as an environmentally benign cleaning agent.

Acide citrique (CA) L'acide citrique anhydre, également connu sous le nom de citrate, avec la forme moléculaire C₆H₈O₇, est un acide organique important.C'est un cristal incolore, inodore, fortement acide, facilement soluble dans l'eau, un régulateur d'acidité (GB2760 -- 2014) et un additif alimentaire.