NCIt definition : A colorless, odorless phosphorus-containing inorganic acid. Phosphoric acid is a sequestering
agent which binds many divalent cations, including Fe , Cu , Ca , and Mg . Phosphoric
acid is used in dentistry and orthodontics as an etching solution, to clean and roughen
the surfaces of teeth where dental appliances or fillings will be placed. In addition,
phosphoric acid is a constituent in bone and teeth, and plays a role in many metabolic
processes.;
Alternative definition : NCI-GLOSS: An acid that contains phosphorus and is used in medicine and dentistry.
It is also used to remove rust. A dilute form of phosphoric acid is used to flavor
soft drinks.;