{
  "url": "https://openlegislation.uk/eu-directive-1975-324/annex/division-1/division-1.10",
  "json_url": "https://openlegislation.uk/eu-directive-1975-324/annex/division-1/division-1.10.json",
  "legislation": "eudr/1975/324",
  "legislation_title": "Council Directive of 20 May 1975 on the approximation of the laws of the Member States relating to aerosol dispensers (75/324/EEC)",
  "legislation_url": "https://openlegislation.uk/eu-directive-1975-324",
  "path": "annex/division/1/division/1.10",
  "kind": "division",
  "number": "1.10",
  "heading": "Chemical Heat of Combustion",
  "text": "The chemical heat of combustion ΔH c shall be either determined by:\n(a) acknowledged rules of technology, described e.g. in standards such as ASTM D 240, ISO 13943 86.1 to 86.3 and NFPA 30B, or found in the scientifically established literature;\nor\n(b) applying the following calculation method:\nThe chemical heat of combustion (ΔH c ), in kilojoules per gram (kJ/g), can be calculated as the product of the theoretical heat of combustion (ΔH comb ), and a combustion efficiency, usually less than 1,0 (a typical combustion efficiency is 0,95 or 95 %).\nFor a composite aerosol formulation, the chemical heat of combustion is the summation of the weighted heats of combustion for the individual components, as follows:\nΔН c = ∑ i n w i % × ΔН c i\nwhere:\nΔH c chemical heat of combustion (kJ/g) of the product;\nw i % mass fraction of component i in the product;\nΔH c(i) specific heat of combustion (kJ/g) of component i in the product.\nThe person responsible for the marketing of the aerosol dispenser has to describe the method used for determining the chemical heat of combustion in a document to be made readily available in an official Community language at the address specified on the label in accordance with point (a) of Article 8(1), if the chemical heat of combustion is used as a parameter for assessing the flammability of aerosols according to the provisions of this Directive.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted by Commission Directive 2008/47/EC of 8 April 2008 amending, for the purposes of adapting to technical progress, Council Directive 75/324/EEC on the approximation of the laws of the Member States relating to aerosol dispensers (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/1975/324/annex/division/1/division/1.10",
    "retrieved_at": "2026-11-01T15:23:47.290500+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."
}