Thorium
Th232.038 g/mol Calculated
Also called torio.
A weakly radioactive metal once used in gas lantern mantles and in camera lenses, and a proposed alternative nuclear fuel. Element 90.
Sources and notes
- The introductionfrom sourceMoleculeFinder curated
- Other namesfrom sourcePubChem / Wikidata
- Formula and weightcomputedPubChem
- 2D drawingcomputedPubChem structure, drawn by RDKit
Where you encounter it
A pure element or an engineered material, rather than an ingredient in a product.
Sources and notes
- The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.
Properties and sources
Calculated by PubChem
- Molecular formula
- Th
- Molecular weight
- 232.038 g/mol
Reported Hazard label (GHS), ECHA via PubChem
Danger Oxidizer pictogram (GHS03), Irritant pictogram (GHS07) and Health hazard pictogram (GHS08); hazard statements H272, H302, H315, H319, H335, H373
Groups it belongs to
- Category
- Element & material
- Family
- Chemical elements
- Hazard classes
- Oxidizing, Irritant, Health hazard, GHS Danger
SMILES
[Th]PubChem CID 23960 · Wikidata Q1115 · InChIKey ZSLUVFAKFWKJRC-UHFFFAOYSA-N · Data refreshed
Questions
- What is Thorium?
- A weakly radioactive metal once used in gas lantern mantles and in camera lenses, and a proposed alternative nuclear fuel. Element 90.
- How toxic is Thorium?
- Its GHS hazard label carries the signal word Danger and the hazard pictograms Oxidizer, Irritant and Health hazard. from source
- What kind of molecule is Thorium?
- Thorium has the formula Th and a molecular weight of 232.038 g/mol. MoleculeFinder files it under chemical elements, in the element & material group. from sourcefrom sourcefrom sourcefrom source
Sources and notes
- Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
- Hazard labelfrom sourceECHA via PubChemThe label combines these classifications.
- ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
- Data refreshedfrom sourceMoleculeFinder2026-11-09