Oxygen (O2)

GPTKB entity

Statements (51)
Predicate Object
gptkbp:instanceOf mole
gptkbp:appearance pale blue (liquid and solid)
gptkbp:aroma odorless
gptkbp:band double bond
gptkbp:boilingPoint -183.0 °C
gptkbp:bondLength 121 pm
gptkbp:CASNumber 7782-44-7
gptkbp:chemicalFormula gptkb:O2
gptkbp:color colorless
gptkbp:component gptkb:Earth's_atmosphere
gptkbp:consistsOf oxygen atom
gptkbp:criticalFor 154.6 K, 5.043 MPa
gptkbp:density 1.429 g/L (at 0°C, 1 atm)
gptkbp:discoveredBy gptkb:Carl_Wilhelm_Scheele
gptkb:Joseph_Priestley
gptkbp:discoveredIn 1774
gptkbp:flavor tasteless
gptkbp:foundIn gptkb:water
air
living organisms
https://www.w3.org/2000/01/rdf-schema#label Oxygen (O2)
gptkbp:isotopicComposition mainly 16O
gptkbp:IUPACName dioxygen
gptkbp:magnetType paramagnetic
gptkbp:meltingPoint -218.8 °C
gptkbp:molecularWeight 31.9988 g/mol
gptkbp:numberOfCarbonAtoms 2
gptkbp:oxidationStates 0
gptkbp:paramagnetic true
gptkbp:percentageInAtmosphere ~21%
gptkbp:producedBy photosynthesis
gptkbp:PubChem_CID 977
gptkbp:requires aerobic respiration
gptkbp:riskFactor supports combustion
oxidizer
gptkbp:roleInBiology essential for most life forms
gptkbp:roleInCombustion supports combustion
gptkbp:solubility slightly soluble
gptkbp:stateAtRoomTemperature gptkb:gasoline
gptkbp:storage compressed gas cylinders
gptkbp:transportation hazardous material
gptkbp:type carbon
hydrogen
metals
gptkbp:UNNumber 1072
gptkbp:usedIn water treatment
medical breathing gas
welding
industrial processes
gptkbp:bfsParent gptkb:Covalent_Bond
gptkbp:bfsLayer 7