{"pid":"https://si-digital-framework.org/SI/units/kilogram","unitId":"kilogram","label":"kilogram","symbol":"kg","startValidity":"1901-05-20","endValidity":"2019-05-19","unitType":"SI base unit","unitTypeId":"https://si-digital-framework.org/SI#SIBaseUnit","unitDefinitionLabel":"kilogram1901","unitDefinitionId":"https://si-digital-framework.org/SI#kilogram1901","definition":"The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram.","definingResolution":"CGPM3-Res2","unitDefinitionStatus":"superseded","previousVersionDate":"1901-05-19","hasPreviousDefinition":false,"nextDefinition":"https://si-digital-framework.org/SI#kilogram2018","prefixRestriction":false,"unitQuantities":[{"code":"MASS","label":"mass"}],"notes":["This international prototype, made of platinum-iridium, is kept at the BIPM under conditions specified by the 1st CGPM in 1889."],"notesIds":["https://si-digital-framework.org/SI#kilogram1901note1"],"nextVersionDate":"2019-05-20"}