1823-dev-add-weight-percent-unit: Add weight percent unit under Mass …

…Fraction Unit

om-2.0.rdf

@@ -8717,6 +8717,7 @@
           <om:Unit rdf:about="&om;one"/>
           <om:Unit rdf:about="&om;partsPerMillion"/>
           <om:Unit rdf:about="&om;percent"/>
+          <om:Unit rdf:about="&om;weightPercent"/>
           <om:UnitDivision rdf:about="&om;gramPerGram"/>
           <om:UnitDivision rdf:about="&om;gramPerKilogram"/>
           <om:UnitDivision rdf:about="&om;gramPerHectogram"/>
@@ -8855,6 +8856,15 @@
     <om:hasDimension rdf:resource="&om;dimensionOne"/>
   </om:Unit>
 
+  <om:Unit rdf:about="&om;weightPercent">
+    <rdfs:label xml:lang="en">weight percent</rdfs:label>
+    <rdfs:label xml:lang="nl">gewicht procent</rdfs:label>
+    <rdfs:comment xml:lang="en">A mass-based percentage unit.</rdfs:comment>
+    <om:symbol>wt.%</om:symbol>
+    <rdf:type rdf:resource="&om;SingularUnit"/>
+    <om:hasDimension rdf:resource="&om;dimensionOne"/>
+  </om:Unit>
+
   <om:Unit rdf:about="&om;partsPerMillion">
     <rdfs:label xml:lang="en">parts per million</rdfs:label>
     <rdfs:comment xml:lang="en">Parts per million is a unit of dimension one defined as 1/1 000 000.</rdfs:comment>