Monosodium Phosphate

NaH₂PO₄

IUPAC: Sodium dihydrogen phosphate

CAS: 7558-80-7

Overview

Monosodium phosphate is a food additive used as an emulsifier, leavening acid, and buffering agent. It is also used in medical enemas.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 2 1.0080
Oxygen O 4 15.9990
Sodium Na 1 22.9900
Phosphorus P 1 30.9740

Elemental Composition

H
Hydrogen ×2
1.7%
O
Oxygen ×4
53.3%
Na
Sodium ×1
19.2%
P
Phosphorus ×1
25.8%

Uses

  • • Food emulsifier
  • • Leavening agent
  • • Buffer solution
  • • Medical enema

Fun Facts

  • ✦ One of the most commonly used phosphate salts in the food industry

Structure

SMILES

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

Properties

Type
salt
State
solid
Molar Mass
119.98 g/mol
Density
2.0400 g/cm³
Melting Point
190.0 °C
Solubility
858 g/L at 20°C

Molecular Descriptors

Exact Mass
119.9588
TPSA
80.6 Ų
H-Bond Donors
2
H-Bond Acceptors
4
Rotatable Bonds
0
Heavy Atoms
6
Complexity
61.0

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 Monosodium Phosphate?
Monosodium Phosphate (NaH₂PO₄) is a salt compound with the IUPAC name Sodium dihydrogen phosphate.
What is the molecular weight of Monosodium Phosphate?
Monosodium Phosphate has a molar mass of 119.98 g/mol.
What state is Monosodium Phosphate at room temperature?
Monosodium Phosphate is a solid at room temperature.
Is Monosodium Phosphate organic or inorganic?
Monosodium Phosphate is classified as an inorganic compound.
What elements make up Monosodium Phosphate?
Monosodium Phosphate (NaH₂PO₄) is composed of Hydrogen (H), Oxygen (O), Sodium (Na), Phosphorus (P).