Sulfur hexafluoride
A sulfur coordination entity consisting of six fluorine atoms attached to a central sulfur atom. It is the most potent greenhouse gas currently known, with a global warming potential of 23,900 times that of CO2 over a 100 year period (SF6 has an estimated lifetime in the atmosphere of between 800 and 3,000 years). — ChEBI
Safety documents & references
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Identity & molecular properties
Source-linked values| CAS number | 2551-62-4 | ChEBI ↗ |
| Molecular formula | F6S | ChEBI ↗ |
| Molar mass | 146.055 g/mol | ChEBI ↗ |
| Monoisotopic mass | 145.96249 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:30496 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 146.06 g/mol | PubChem ↗ |
| Exact mass | 145.96249015 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 identifiersulfur hexafluoridehexafluoridosulfurSFZCNBIFKDRMGX-UHFFFAOYSA-NFS(F)(F)(F)(F)FInChI=1S/F6S/c1-7(2,3,4,5)6Names & 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 governmentSulfur hexafluoride · H30-C-083-MHLW
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 146.055 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsFSCalculated 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 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
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.