{
  "url": "https://openlegislation.uk/eu-regulation-2003-2003/division-A./division-A.3.",
  "json_url": "https://openlegislation.uk/eu-regulation-2003-2003/division-A./division-A.3..json",
  "legislation": "eur/2003/2003",
  "legislation_title": "Regulation (EC) No 2003/2003 of the European Parliament and of the Council of 13 October 2003 relating to fertilisers (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2003-2003",
  "path": "division/A./division/A.3.",
  "kind": "division",
  "number": "A.3",
  "heading": "Potassic fertilisers",
  "text": "No\nType designation\nData on method of production and essential ingredients\nMinimum content of nutrients (percentage by weight)Data on the expression of nutrientsOther requirements\nOther data on the type designation\nNutrient content to be declaredForms and solubilities of the nutrientsOther criteria\n1\n2\n3\n4\n5\n6\n1\nCrude potassium salt\nProduct obtained from crude potassium salts\n9 % K 2 O\nPotassium expressed as water-soluble K 2 O\n2 % MgO\nMagnesium in the form of water-soluble salts, expressed as magnesium oxide\nUsual trade names may be added\nWater-soluble potassium oxide\nWater-soluble magnesium oxide\nTotal sodium oxide\nChloride content must be declared\n2\nEnriched crude potassium salt\nProduct obtained from crude potassium salts enriched by blending with potassium chloride\n18 % K 2 O\nPotassium expressed as water-soluble K 2 O\nUsual trade names may be added\nWater-soluble potassium oxide\nOptional mention of the water-soluble magnesium oxide content where higher than 5 % MgO\n3\nMuriate of potash\nProduct obtained from crude potassium salts and containing potassium chloride as its essential ingredient\n37 % K2O\nPotassium expressed as water-soluble K2O\nUsual trade names may be added\nWater-soluble potassium oxide\n4\nPotassium chloride containing magnesium salts\nProduct obtained from crude potassium salts with added magnesium salts and containing potassium chloride and magnesium salts as essential ingredients\n37 % K2O\nPotassium expressed as water-soluble K2O\nWater-soluble potassium oxide\nWater-soluble magnesium oxide\n5 % MgO\nMagnesium in the form of water-soluble salts, expressed as magnesium oxide\n5\nSulphate of potash\nProduct obtained chemically from potassium salts and containing potassium sulphate as its essential ingredient\n47 % K2O\nPotassium expressed as water-soluble K2O\nMaximum chloride content: 3 % Cl\nWater-soluble potassium oxide\nOptional mention of the chloride content\n6\nSulphate of potash containing magnesium salt\nProduct obtained chemically from potassium salts, possibly with addition of magnesium salts, and containing potassium sulphate and magnesium sulphate as essential ingredients\n22 % K2O\nPotassium expressed as water-soluble K2O\nUsual trade names may be added\nWater-soluble potassium oxide\nWater-soluble magnesium oxide\nOptional mention of the chloride content\n8 % MgO\nMagnesium in the form of water-soluble salts, expressed as magnesium oxide\nMaximum chloride content: 3 % Cl\n7\nKieserite with potassium sulphate\nProduct obtained from Kieserite with potassium sulphate added\n8 % MgO\nMagnesium expressed as water-soluble MgO\nUsual trade names may be added\nWater-soluble magnesium oxide\nWater-soluble potassium oxide\nOptional mention of the chloride content\n6 % K2O\nPotassium expressed as water-soluble K2O\nTotal MgO + K2O: 20 %\nMaximum chloride content: 3 % Cl",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) No 463/2013 of 17 May 2013 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I, II and IV thereto to technical progress (Text with EEA relevance)."
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Substituted by Commission Regulation (EU) No 1257/2014 of 24 November 2014 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I and IV (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2003/2003/division/A./division/A.3.",
    "retrieved_at": "2026-11-01T14:55:51.297977+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}