{
  "url": "https://openlegislation.uk/eu-regulation-2011-544/annex/part-A/division-2/division-2.9/division-2.9.2",
  "json_url": "https://openlegislation.uk/eu-regulation-2011-544/annex/part-A/division-2/division-2.9/division-2.9.2.json",
  "legislation": "eur/2011/544",
  "legislation_title": "Commission Regulation (EU) No 544/2011 of 10 June 2011 implementing Regulation (EC) No 1107/2009 of the European Parliament and of the Council as regards the data requirements for active substances (Text with EEA relevance) (repealed)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2011-544",
  "path": "annex/part/A/division/2/division/2.9/division/2.9.2",
  "kind": "division",
  "number": "2.9.2",
  "heading": null,
  "text": "For compounds with a molar (decadic) absorption coefficient (ε) > 10 (1 × mol–1 × cm–1) at a wavelength λ ≥ 290 nm, direct phototransformation in purified (e.g. distilled) water at 20 to 25 °C, of purified active substance usually radio labelled using artificial light under sterile conditions, if necessary using a solubiliser, must be determined and reported. Sensitisers such as acetone must not be used as a cosolvent or solubiliser. The light source must simulate sunlight and be equipped with filters to exclude radiation at wavelengths λ < 290 nm. The identity of breakdown products formed which at any time during the study are present in quantities ≥ 10 % of the active substance added, a mass balance to account for at least 90 % of the applied radioactivity, as well as photochemical halflife must be reported.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Repealed (subject to transitional measures in Arts. 3, 4) by Commission Regulation (EU) No 283/2013 of 1 March 2013 setting out the data requirements for active substances, in accordance with Regulation (EC) No 1107/2009 of the European Parliament and of the Council concerning the placing of plant protection products on the market Text with EEA relevance."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2011/544/annex/part/A/division/2/division/2.9/division/2.9.2",
    "retrieved_at": "2026-11-01T14:50:06.051752+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."
}