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Improvements in the manufacture and production of valuable photochemical products

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  • Title:
    Improvements in the manufacture and production of valuable photochemical products
  • Subjects: HUMAN NECESSITIES ; HYGIENE ; MEDICAL OR VETERINARY SCIENCE ; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
  • Description: 321,992. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.) Aug. 25, 1928. Radiations, treating substances with. - Irradiation of sterols, e.g. ergosterol, is carried out in solution in a solvent which exercises a protective action on the anti-rachitic substance which is produced. Suitable solvents are ethylether and alcohols, e.g. ethyl alcohol in which ethylene or alkali hydroxides have been dissolved.
  • Creation Date: 1929
  • Language: English
  • Source: esp@cenet
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