moleculefinder

Sodium

Na22.9897693 g/mol Calculated

Also called Na and Natrium.

A metal soft enough to cut with a knife that explodes on water, and whose ion is half of table salt and the reason your nerves conduct. Element 11.

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. Sodium on our curated lists.

Foods

Valio ValSa milk saltOn its ingredient list

Every product and list we hold

Sources and notes
  • Ingredient listsfrom sourceWikidata
  • How it gets therefrom sourceMoleculeFinder curatedEach mark is set by hand on our lists, never inferred; a label's ingredient is added by the maker. A row with no mark data says Not marked.
  • Valio ValSa milk salt: no markfrom sourceMoleculeFinder curatedThe milk salt's composition is not confirmed, so it carries no mark.
  • The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.

Properties and sources

Calculated by PubChem

Molecular formula
Na
Molecular weight
22.9897693 g/mol

Reported Hazard label (GHS), ECHA, EU CLP Regulation, Safe Work Australia via PubChem

Danger Flammable pictogram (GHS02) and Corrosive pictogram (GHS05); hazard statements H260, H314, H318

Groups it belongs to

Category
Element & material
Family
Chemical elements
Elements
Sodium
Hazard classes
Flammable, Corrosive, GHS Danger
Size
Under 100 g/mol
SMILES[Na]

PubChem CID 5360545 · Wikidata Q658 · InChIKey KEAYESYHFKHZAL-UHFFFAOYSA-N · Data refreshed

How MoleculeFinder sources and labels its data

Questions
What is Sodium?
A metal soft enough to cut with a knife that explodes on water, and whose ion is half of table salt and the reason your nerves conduct. Element 11.
How toxic is Sodium?
Its GHS hazard label carries the signal word Danger and the hazard pictograms Flammable and Corrosive. from source
What kind of molecule is Sodium?
Sodium has the formula Na and a molecular weight of 22.99 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, EU CLP Regulation, Safe Work Australia via PubChemThe label combines these classifications.
  • ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
  • EU CLP Regulationfrom sourceAttributionSource: EUR-Lex, Regulation (EC) No 1272/2008, © European Union.
  • Safe Work Australiafrom sourceAttributionSource: Safe Work Australia, Hazardous Chemical Information System, © Commonwealth of Australia, CC BY 4.0.
  • Data refreshedfrom sourceMoleculeFinder2026-11-09