The predicate propertyType is quite generic. Is there another predicate available from RDF schema that could be used?
I identified RDFS:allowedPropertyType
An instance of ConstraintPropertyType that is used to specify the properties that the instances of a Class may have.
I think this is appropriate because BalanceablePropertyType consists only of quantities that follow the law of conservation (Eg Mass/Energy and excludes units that don't e.g No. of unit/ volume etc)