File:CaSO4simple.svg · Wikimedia Commons · See Wikimedia Commons
calcium sulfate
Sign in to saveAlso known as CaSO4, calcium sulphate, calcium sulfate anhydrous, anhydrous calcium sulfate, anhydrous gypsum, anhydrous sulfate of lime, calcium salt of sulfuric acid
laboratory and industrial chemical
OverviewAI-generated
Calcium sulfate is a chemical compound with the formula CaSO₄. It has a standard enthalpy of formation of -1434.555555 and a mass of 135.91432046. The substance exhibits a density of 2.96 and a melting point of 1450. Its decomposition point is 2840, while its vapor pressure is 0. The solubility of calcium sulfate is 0.3.
According to PubChem data, the compound has a weight of 136.14 and a topological polar surface area of 88.6. It contains 0 hydrogen bond donors and 4 hydrogen bond acceptors, with a charge of 0. The NIOSH Pocket Guide lists a time-weighted average exposure limit of 15 for this substance.
Synthesized by Vinony from 24 facts across 4 sources: Wikidata, PubMed, PubChem, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.
Chemical data
- Formula
- CaO4S
- Molecular weight
- 136.14 g/mol
- IUPAC name
- calcium sulfate
- SMILES
- [O-]S(=O)(=O)[O-].[Ca+2]
- InChIKey
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L
- Polar surface area
- 88.6 Ų
- H-bond donors
- 0
- H-bond acceptors
- 4
- Formal charge
- 0
via PubChem
Research
14,093 papersvia PubMed
~10 min read
Encyclopedic overview
Calcium sulfate (or calcium sulphate) is an inorganic salt with the chemical formula CaSO 4. It occurs in several hydrated forms; the anhydrous state (known as anhydrite) is a white crystalline solid often found in evaporite deposits. Its dihydrate form is the mineral gypsum, which may be dehydrated to produce bassanite, the hemihydrate state. Gypsum occurs in nature as crystals (selenite) or fibrous masses (satin spar), typically colorless to white, though impurities can impart other hues. All forms of calcium sulfate are sparingly soluble in water and cause permanent hardness when dissolved therein.
Hydration states
Excerpted from Wikipedia’s “calcium sulfate” article, available under the CC BY-SA 4.0 licence.