superphosphate

Chemical compound

Chemical compoundtype of chemical entityQ899094

Formula: H₆CaO₈P₂²⁺
Mass: 235.9153 Da

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

Superphosphate is a chemical fertiliser first synthesised in the 1840s by reacting bones with sulfuric acid. The process was subsequently improved by reacting phosphate coprolites with sulfuric acid. Subsequently, other phosphate-rich deposits such as phosphorite were discovered and used. Soluble phosphate is an essential nutrient for all plants, and the availability of superphosphate revolutionised agricultural productivity.

Overview

Chemistry

Computed by PubChem CID 24846366 (NIH) · Public domain

Molecular formula: CaH6O8P2+2
Molecular weight: 236.07 g/mol
IUPAC name: calcium phosphoric acid
SMILES: OP(=O)(O)O.OP(=O)(O)O.[Ca+2]
InChIKey: YYRMJZQKEFZXMX-UHFFFAOYSA-N
Topological polar surface area: 156 Å²
H-bond donors / acceptors: 6 / 8
Complexity: 49

Chemistry

All data

27 statements · 11% with external sources · numbers in brackets are citations

Discovered: 1842
Members / parts: calcium
phosphorus
oxygen
hydrogen
Canonical SMILES: O=P(O)(O)O.O=P(O)(O)O.[Ca+2]
Subclass of: dihydrogenphosphate
calcium phosphate

On other databases

16 identifiers linking superphosphate across the web's reference databases

Data quality

statements

11%

externally sourced

Source last edited September 23, 2026. AIDB refreshes this page daily.

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AIDB. (2026). superphosphate (Q899094). Retrieved from https://aidb.si/e/superphosphate-Q899094