Cobalt dichloride
A cobalt salt in which the cobalt metal is in the +2 oxidation state and the counter-anion is chloride. It is used as an indicator for water in desiccants. — ChEBI
Safety documents & references
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Identity & molecular properties
Source-linked values| CAS number | 7646-79-9 | ChEBI ↗ |
| Molecular formula | 2Cl.Co | ChEBI ↗ |
| Molar mass | 129.839 g/mol | ChEBI ↗ |
| Monoisotopic mass | 128.8709 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:35696 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 129.84 g/mol | PubChem ↗ |
| Exact mass | 128.870899 Da | PubChem ↗ |
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 identifiercobalt dichloridecobalt dichlorideGVPFVAHMJGGAJG-UHFFFAOYSA-L[Cl-].[Cl-].[Co+2]InChI=1S/2ClH.Co/h2*1H;/q;;+2/p-2Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Safety classification · Japan
NITE / Japanese governmentCobalt(II) dichloride · R06-C-101-JNIOSH
| Endpoint | Reported classification |
|---|---|
| Carcinogenicity | Category 1B |
Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.
Read the original NITE classificationMass ↔ amount of substance
Calculated from sourced massUses 129.839 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
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