Noun
sodium aluminium phosphate (plural sodium aluminium phosphates)
(inorganic chemistry) An ionic compound made up of aluminium cations (Al), sodium cations (Na), and phosphate anions (PO4) in the ratio of 1:3:2, respectively. Other ratios are possible and some combinations also contain hydrogen and/or water molecules and/or HPO4 as well. It is used in baking as a leavening agent for making sponge cakes, crumpets.