Krypton
Kr83.8 g/mol Calculated
Also called Element-Kr.
A noble gas used in high-performance lighting and once, before caesium, the standard that defined the metre. Element 36.
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
- Kr
- Molecular weight
- 83.8 g/mol
Reported Hazard label (GHS), ECHA via PubChem
Warning Compressed gas pictogram (GHS04); hazard statements H280, H281
Groups it belongs to
- Category
- Element & material
- Family
- Chemical elements
- Hazard classes
- Compressed gas, GHS Warning
- Size
- Under 100 g/mol
Questions
- What is Krypton?
- A noble gas used in high-performance lighting and once, before caesium, the standard that defined the metre. Element 36.
- How toxic is Krypton?
- Its GHS hazard label carries the signal word Warning and the hazard pictogram Compressed gas. from source
- What kind of molecule is Krypton?
- Krypton has the formula Kr and a molecular weight of 83.8 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