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calcium carbonate

File:Calcite.png · Wikimedia Commons · See Wikimedia Commons

EntityQ23767· pop 80· linked from 1,477 articles

calcium carbonate

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Also known as E 170, CaCO3

chemical compound

OverviewAI-generated

Calcium carbonate is a chemical compound with the formula CaCO₃. It has a density of 2.95 and a mass of 99.947335. The substance exhibits a vapor pressure of 0 and a solubility of 0.001. Its decomposition point is 2442, and it has a refractive index of 1.6. The pKa value is 9.

Safety data indicates a time-weighted average exposure limit of 15. The median lethal dose (LD50) is 6450, while the defined daily dose is 3. According to PubChem, the compound has a weight of 100.09 and a topological polar surface area of 63.2. It contains zero hydrogen bond donors and three hydrogen bond acceptors, with a net charge of 0.

Synthesized by Vinony from 27 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula
CCaO3
Molecular weight
100.09 g/mol
IUPAC name
calcium carbonate
SMILES
C(=O)([O-])[O-].[Ca+2]
InChIKey
VTYYLEPIZMXCLO-UHFFFAOYSA-L
Polar surface area
63.2 Ų
H-bond donors
0
H-bond acceptors
3
Formal charge
0

via PubChem

Research

18,368 papers

via PubMed

~31 min read

Encyclopedic overview

Crystal structure of calcite

Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite, most notably in chalk and limestone, eggshells, gastropod shells, shellfish skeletons and pearls. Materials containing much calcium carbonate or resembling it are described as calcareous. Calcium carbonate is the active ingredient in agricultural lime. Limescale is calcium carbonate produced when calcium ions in hard water react with carbonate ions. Calcium carbonate has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause hypercalcemia and digestive issues.

Excerpted from Wikipedia’s “calcium carbonate” article, available under the CC BY-SA 4.0 licence.

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