{
  "id": "un_number",
  "name": "UN number (dangerous goods)",
  "status": "draft",
  "doc": "Four-digit number that the UN Committee of Experts on the Transport of Dangerous Goods assigns to a hazardous substance or article, such as 1203 for petrol. It appears on transport documents and orange hazard plates.",
  "categories": [
    {
      "id": "transport",
      "name": "Transportation"
    },
    {
      "id": "chemistry",
      "name": "Chemistry"
    }
  ],
  "langs": [
    {
      "id": "common",
      "name": "Common to most languages"
    }
  ],
  "is_pii": false,
  "classification": "categorical",
  "regexp": "^\\d{4}$",
  "examples": [
    {
      "value": "1687",
      "description": "sodium azide"
    },
    {
      "value": "1170",
      "description": "ethanol"
    }
  ],
  "mappings": {
    "wikidata": "P695"
  },
  "links": [
    {
      "type": "wikipedia",
      "url": "https://en.wikipedia.org/wiki/UN_number"
    },
    {
      "type": "wikidata",
      "url": "https://www.wikidata.org/wiki/Property:P695"
    }
  ],
  "type": "datatype",
  "wikidata_property": "P695",
  "translations": {}
}