Sodium Phosphate Tribasic

Na₃PO₄

IUPAC: Trisodium phosphate

CAS: 7601-54-9

Overview

Trisodium phosphate (TSP) is a powerful cleaning agent and degreaser. It was once common in household detergents before environmental regulations limited its use.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 4 15.9990
Sodium Na 3 22.9900
Phosphorus P 1 30.9740

Elemental Composition

O
Oxygen ×4
39.0%
Na
Sodium ×3
42.1%
P
Phosphorus ×1
18.9%

Uses

  • • Industrial cleaner
  • • Degreaser
  • • Food additive (E339)
  • • Flux for soldering

Fun Facts

  • ✦ Phosphate detergent bans helped reduce lake eutrophication worldwide

Safety

  • ⚠ Irritant
  • ⚠ Corrosive at high concentrations

Structure

SMILES

[O-]P(=O)([O-])[O-].[Na+].[Na+].[Na+]

Properties

Type
salt
State
solid
Molar Mass
163.94 g/mol
Density
2.5360 g/cm³
Melting Point
1583.0 °C
Solubility
120 g/L at 25°C

Molecular Descriptors

Exact Mass
163.9227
TPSA
86.3 Ų
H-Bond Donors
0
H-Bond Acceptors
4
Rotatable Bonds
0
Heavy Atoms
8
Complexity
36.0

Related Compounds

Ammonium Bicarbonate

NH₄HCO₃

Ammonium Chloride

NH₄Cl

Ammonium Sulfate

(NH₄)₂SO₄

Barium Carbonate

BaCO₃

Barium Chloride

BaCl₂

Barium Sulfate

BaSO₄

Cadmium Sulfide

CdS

Calcium Acetate

Ca(C₂H₃O₂)₂

Calcium Carbonate

CaCO₃

Calcium Citrate

Ca₃(C₆H₅O₇)₂

Frequently Asked Questions

What is Sodium Phosphate Tribasic?
Sodium Phosphate Tribasic (Na₃PO₄) is a salt compound with the IUPAC name Trisodium phosphate.
What is the molecular weight of Sodium Phosphate Tribasic?
Sodium Phosphate Tribasic has a molar mass of 163.94 g/mol.
What state is Sodium Phosphate Tribasic at room temperature?
Sodium Phosphate Tribasic is a solid at room temperature.
Is Sodium Phosphate Tribasic organic or inorganic?
Sodium Phosphate Tribasic is classified as an inorganic compound.
What elements make up Sodium Phosphate Tribasic?
Sodium Phosphate Tribasic (Na₃PO₄) is composed of Oxygen (O), Sodium (Na), Phosphorus (P).