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Chemical substance record

Caesium chloride

7647-17-8Cl.Cs168.358 g/mol
MineralChEBI source record

The inorganic chloride salt of caesium; each caesium ion is coordinated by eight chlorine ions. — ChEBI

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Identity & molecular properties

Source-linked values
CAS number7647-17-8ChEBI ↗
Molecular formulaCl.CsChEBI ↗
Molar mass168.358 g/molChEBI ↗
Monoisotopic mass167.8743 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:63039ChEBI ↗

Cross-source molecular data

PubChem
Molar mass168.36 g/molPubChem ↗
Exact mass167.8743047 DaPubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier
caesium chloride
caesium chloride
AIYUHDOJVYHVIT-UHFFFAOYSA-M
[Cl-].[Cs+]
InChI=1S/ClH.Cs/h1H;/q;+1/p-1

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

vasoconstrictor agentphase-transfer catalyst

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00593972 mol

Uses 168.358 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
Cs
Cesium · 1 atom
78.94%
Cl
Chlorine · 1 atom
21.06%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations
Debye-waller factors of compounds with the caesium chloride structure. ↗Acta crystallographica. Section A, Foundations of crystallography · 2000 Nov · PMID 11058836

Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:63039

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 24293 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.