De Martindale beschrijft het volgende: “Phosphoric acid has industrial uses. Dilute phosphoric acid has been used well diluted in preparations intended for the management of nausea and vomiting; it has also been included in preparations for vaginal infections. Phosphoric acid is used in dentistry to etch tooth enamel.”
Fosforzuur dus in sterk verdunde omstandigheden gebruikt worden voor inwendige toepassingen.
