substance amount

{
  "id": "NISTd6",
  "unitsml_id": "d:substance_amount",
  "name": "substance amount",
  "names": [
    {
      "value": "substance amount",
      "lang": "en"
    }
  ],
  "expression": "N",
  "dimensionless": false,
  "components": [
    {
      "key": "amount_of_substance",
      "symbol": "N",
      "power": 1
    }
  ],
  "quantities": [
    {
      "id": "NISTq6",
      "name": "amount of substance"
    }
  ],
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTd6"
    },
    {
      "type": "unitsml",
      "id": "d:substance_amount"
    }
  ],
  "references": [
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/dimensionvector/A1E0L0I0M0H0T0D0"
    }
  ]
}