Phosphoric acid is a weak acid with the chemical formula H₃PO₄. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound. The prefix ortho- is used to distinguish the acid from related phosphoric acids, called polyphosphoric acids.
Formula: H3PO4
Molar mass: 97.994 g/mol
IUPAC ID: Phosphoric acid
Density: 1.88 g/cm³
Boiling point: 158 °C
Soluble in: Water, Alcohol.