Phosphoric Acid

H₃PO₄

IUPAC: Phosphoric acid

CAS: 7664-38-2

Overview

Phosphoric acid is a weak triprotic acid commonly used in soft drinks and fertilizers. It gives cola beverages their characteristic tangy flavor.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 3 1.0080
Oxygen O 4 15.9990
Phosphorus P 1 30.9740

Elemental Composition

Uses

  • Fertilizer production
  • Soft drink acidulant
  • Rust removal
  • Dental etchant

Fun Facts

  • Phosphoric acid gives Coca-Cola its pH of about 2.5

Safety

  • ⚠ Corrosive at high concentrations

Structure

SMILES

OP(=O)(O)O

Properties

Type
acid
State
solid
Molar Mass
98.00 g/mol
Density
1.8900 g/cm³
Melting Point
42.4 °C
Boiling Point
158.0 °C
Solubility
Miscible

Molecular Descriptors

Exact Mass
97.9769
XLogP
-2.1
TPSA
77.8 Ų
H-Bond Donors
3
H-Bond Acceptors
4
Rotatable Bonds
0
Heavy Atoms
5
Complexity
49.0

Frequently Asked Questions

What is Phosphoric Acid?
Phosphoric Acid (H₃PO₄) is a acid compound with the IUPAC name Phosphoric acid.
What is the molecular weight of Phosphoric Acid?
Phosphoric Acid has a molar mass of 98.0 g/mol.
What state is Phosphoric Acid at room temperature?
Phosphoric Acid is a solid at room temperature.
Is Phosphoric Acid organic or inorganic?
Phosphoric Acid is classified as an inorganic compound.
What elements make up Phosphoric Acid?
Phosphoric Acid (H₃PO₄) is composed of Hydrogen (H), Oxygen (O), Phosphorus (P).