quantitykind:Gravity_API

PredicateObject
rdf:type qudt:QuantityKind
dcterms:description “The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of a petroleum liquid's density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity. Although API gravity is mathematically a dimensionless quantity (see the formula below), it is referred to as being in 'degrees'. API gravity is graduated in degrees on a hydrometer instrument. API gravity values of most petroleum liquids fall between 10 and 70 degrees.”
dcterms:isReplacedBy quantitykind:APIGravity
qudt:applicableUnit
Show 15 values
qudt:baseSIUnitDimensions \(qkdv:A0E0L0I0M0H0T0D1\)
qudt:deprecated “true”
qudt:hasDimensionVector qkdv:A0E0L0I0M0H0T0D1
qudt:informativeReference https://en.wikipedia.org/wiki/API_gravity
qudt:isoNormativeReference http://www.iso.org/iso/catalogue_detail?csnumber=31894
qudt:plainTextDescription “The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of a petroleum liquid's density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity. Although API gravity is mathematically a dimensionless quantity (see the formula below), it is referred to as being in 'degrees'. API gravity is graduated in degrees on a hydrometer instrument. API gravity values of most petroleum liquids fall between 10 and 70 degrees.”
qudt:qkdvDenominator qkdv:A0E0L-3I0M1H0T0D0
qudt:qkdvNumerator qkdv:A0E0L-3I0M1H0T0D0
qudt:wikidataMatch http://www.wikidata.org/entity/Q29246
rdfs:comment “Applicable units are those of quantitykind:DimensionlessRatio”
rdfs:isDefinedBy http://qudt.org/3.1.10/vocab/quantitykind
rdfs:label “API Gravity”@en
skos:broader quantitykind:DimensionlessRatio
Generated 2026-01-15T09:03:10.866-05:00