diff --git a/CHANGELOG.md b/CHANGELOG.md
index afe14fadb..e35e91150 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and the versioning aims to respect [Semantic Versioning](http://semver.org/spec/
 ### Added
 - methanol (#1827)
 - has prefix (#1835)
+- quantity (#1839)
 
 ### Changed
 ### Removed
diff --git a/src/ontology/edits/oeo-shared.omn b/src/ontology/edits/oeo-shared.omn
index 9635924e7..f65791fe9 100644
--- a/src/ontology/edits/oeo-shared.omn
+++ b/src/ontology/edits/oeo-shared.omn
@@ -1869,3 +1869,20 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1652",
         <http://purl.obolibrary.org/obo/BFO_0000015>
     
     
+Class: OEO_00340062
+
+    Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A quantity is a quality of a material entity where the magnitude  of the quality can be quantified via a quantity value, which means that it can be expressed as a number and a unit.",
+        <http://purl.obolibrary.org/obo/IAO_0000119> "Derived from: https://jcgm.bipm.org/vim/en/1.1.html",
+        <http://purl.obolibrary.org/obo/IAO_0000233> "issue: https://github.com/OpenEnergyPlatform/ontology/issues/1510
+pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1839",
+        rdfs:label "quantity"@en
+    
+    EquivalentTo: 
+        <http://purl.obolibrary.org/obo/BFO_0000019>
+         and (OEO_00140002 some OEO_00000350)
+    
+    SubClassOf: 
+        <http://purl.obolibrary.org/obo/BFO_0000019>
+    
+