Superphosphate

Ca(H₂PO₄)₂

IUPAC: Calcium dihydrogen phosphate

CAS: 7758-23-8

Overview

Single superphosphate was the first commercial fertilizer, produced since the 1840s. It provides both phosphorus and calcium to crops.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 4 1.0080
Oxygen O 8 15.9990
Phosphorus P 2 30.9740
Calcium Ca 1 40.0780

Elemental Composition

H
Hydrogen ×4
1.7%
O
Oxygen ×8
54.7%
P
Phosphorus ×2
26.5%
Ca
Calcium ×1
17.1%

Uses

  • • Phosphorus fertilizer
  • • Calcium supplement for soil
  • • Animal feed additive

Fun Facts

  • ✦ The first industrial fertilizer ever produced, patented by John Bennet Lawes in 1842

Structure

SMILES

OP(=O)(O)[O-].OP(=O)(O)[O-].[Ca+2]

Properties

Type
salt
State
solid
Molar Mass
234.05 g/mol
Density
2.2200 g/cm³
Melting Point
109.0 °C
Solubility
18 g/L at 20°C

Molecular Descriptors

Exact Mass
233.9007
TPSA
161.0 Ų
H-Bond Donors
4
H-Bond Acceptors
8
Rotatable Bonds
0
Heavy Atoms
11
Complexity
49.0

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 Superphosphate?
Superphosphate (Ca(H₂PO₄)₂) is a salt compound with the IUPAC name Calcium dihydrogen phosphate.
What is the molecular weight of Superphosphate?
Superphosphate has a molar mass of 234.05 g/mol.
What state is Superphosphate at room temperature?
Superphosphate is a solid at room temperature.
Is Superphosphate organic or inorganic?
Superphosphate is classified as an inorganic compound.
What elements make up Superphosphate?
Superphosphate (Ca(H₂PO₄)₂) is composed of Hydrogen (H), Oxygen (O), Phosphorus (P), Calcium (Ca).