Structure via PubChem · Public domain (PubChem)
Chemical data
- Formula
- CaS
- Molecular weight
- 72.15 g/mol
- IUPAC name
- calcium sulfide
- SMILES
- [S-2].[Ca+2]
- InChIKey
- AGVJBLHVMNHENQ-UHFFFAOYSA-N
- Polar surface area
- 1 Ų
- H-bond donors
- 0
- H-bond acceptors
- 1
- Formal charge
- 0
via PubChem
Research
117 papers- Calcium Sulfide Based Nanophosphors-A Review on Synthesis Techniques, Characterization and Applications.Journal of fluorescence · 2025
- Biodegradable calcium sulfide-based nanomodulators for H(2)S-boosted Ca(2+)-involved synergistic cascade cancer therapy.Acta pharmaceutica Sinica. B · 2022
- Study of the Process of Calcium Sulfide-Based Luminophore Formation from Phosphogypsum.Molecules (Basel, Switzerland) · 2024
- Calcium Sulfide Nanoclusters Trigger DNA Damage and Induce Cell Cycle Arrest in Non-Small-Cell Lung Adenocarcinoma Cells.International journal of molecular sciences · 2025
- Regulatory role of calcium sulfide in ripening delay of postharvest bananas.Food chemistry. Molecular sciences · 2025
via PubMed
~3 min read
Encyclopedic overview
Calcium sulfide is the chemical compound with the formula CaS. This white material crystallizes in cubes like rock salt. CaS has been studied as a component in a process that would recycle gypsum, a product of flue-gas desulfurization. Like many salts containing sulfide ions, CaS typically has an odour of H2S, which results from small amount of this gas formed by hydrolysis of the salt.
In terms of its atomic structure, CaS crystallizes in the same motif as sodium chloride indicating that the bonding in this material is highly ionic. The high melting point is also consistent with its description as an ionic solid. In the crystal, each S ion is surrounded by an octahedron of six Ca ions, and complementarily, each Ca ion surrounded by six S ions.
Excerpted from Wikipedia’s “calcium sulfide” article, available under the CC BY-SA 4.0 licence.