{
  "url": "https://openlegislation.uk/bread-and-flour-wales-regulations-2025/schedule-3",
  "json_url": "https://openlegislation.uk/bread-and-flour-wales-regulations-2025/schedule-3.json",
  "legislation": "wsi/2025/88",
  "legislation_title": "The Bread and Flour (Wales) Regulations 2025",
  "legislation_url": "https://openlegislation.uk/bread-and-flour-wales-regulations-2025",
  "path": "schedule/3",
  "kind": "schedule",
  "number": "3",
  "heading": "Specification for iron powder",
  "text": "Specification for iron powder for the purpose of Schedule 1, paragraph 2, Table 2\n(1)BS 410:1969 “Specification for test sieves”. Published by the British Standards Institution on 31 August 1971. Available at: https://knowledge.bsigroup.com.\nDefinition\nIron powder consisting ... of finely-divided metallic iron containing at least 90% by weight of iron and conforming to the requirements of this Schedule.\nChemical name\nIron\nChemical formula\nFe\nAssay\nAccurately weigh 0.25 g of sample into a stoppered flask. Add a hot solution of 1.25 g of copper sulphate pentahydrate in 20 ml of water and shake for 10 minutes. Filter rapidly and wash the filter with water; acidify the mixed filtrate and washings with sulphuric acid, and titrate with N/10 potassium permanganate. Each ml of N/10 potassium permanganate is equivalent to 0.005585 g of iron.\nDescription\nFine greyish-black powder of such granularity that not more than 0.1% by weight remains on a British Standard 410:1969 wire sieve nominal aperture size 150 μm and not more than 5% by weight on a British Standard 410:1969 wire sieve nominal aperture size 53 μm.\nIdentification\nSolubility\nAt least 95% of the iron content when determined by the following method.\nAccurately weigh 0.1 g of sample into a 750 ml conical flask. Add 450 ml 0.2% weight in weight hydrochloric acid previously warmed to 37°C. Stir continuously for 3 hours, maintaining the temperature at 37°C. Cool to room temperature and dilute to 500 ml with distilled water. Filter; determine the iron content of the filtrate by a suitable method. Calculate the total iron in solution as a percentage of the metallic iron content of the sample taken.",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Word in Sch. 3 omitted (1.8.2025) by virtue of The Amendments to Subordinate Legislation (Miscellaneous Corrections) (Wales) Regulations 2025 (S.I. 2025/805), regs. 1(2), 13(4)(a)"
    },
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 3 in force at 19.2.2025, see reg. 1(2)"
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "(1)BS 410:1969 “Specification for test sieves”. Published by the British Standards Institution on 31 August 1971. Available at: https://knowledge.bsigroup.com."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2025/88/schedule/3",
    "retrieved_at": "2026-10-28T22:58:42.283241+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."
}