Composition might need to be modeled differently

[msporny]

I'd model the percent composition differently... as a separate node:

  "chemicalComposition": [{
    "id": "Tc"
    "percentage": "84.61"
  }, {
    "id": "Mc"
    "percentage": "46.95"
  },{
    "id": "Og"
    "percentage": "83.5"
  }]

As a side note, it's confusing that those percentages don't add up to 100 in the example, but I'm assuming that's just the autogenerated stuff being wonky?

[davidlehn]

If id is mapped to @id, the above likely won't do what you want. It would define the percentage properties on the elements themselves. Perhaps the existing chemistry ontologies already model this sort of thing?

[OR13]

{
  "@context": "https://w3id.org/traceability/v1",
  "observation": [
    {
      "property": {
        "name": "Cadmium",
        "formula": "Cd",
        "inchi": "InChI=1S/Cd",
        "inchikey": "BDOSMKKIYDKNTQ-UHFFFAOYSA-N"
      },
      "measurement": {
        "value": "17.240",
        "unitCode": "P1"
      }
    },
    {
      "property": {
        "name": "Rhodium",
        "formula": "Rh",
        "inchi": "InChI=1S/Rh",
        "inchikey": "MHOVAHRLVXNVSD-UHFFFAOYSA-N"
      },
      "measurement": {
        "value": "82.760",
        "unitCode": "P1"
      }
    }
  ]
}

Is this better?

[OR13]

please move discussion to the W3C CCG.