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Chemical substance record

Samarium

7440-19-9Sm150.36 g/mol
ElementChEBI source record

Samarium is indexed in ChEBI under CHEBI:33374, with the reported formula Sm. Use the source record and structural identifiers below to confirm the material you need. — ChEBI

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Identity & molecular properties

Source-linked values
CAS number7440-19-9ChEBI ↗
Molecular formulaSmChEBI ↗
Molar mass150.36 g/molChEBI ↗
Monoisotopic mass151.91973 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:33374ChEBI ↗

Cross-source molecular data

PubChem
Molar mass150.4 g/molPubChem ↗
Exact mass151.91974 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

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samarium atom
samarium
KZUNJOHGWZRPMI-UHFFFAOYSA-N
[Sm]
InChI=1S/Sm

Names & synonyms

samarium

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.0066507 mol

Uses 150.36 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
Sm
Samarium · 1 atom
100.00%

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

Research & patent references

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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:33374

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

NCBI PubChem · CID 23951 · 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.