Polychlorinated biphenyl residues in silos in the United States

  • L. B. Willett
  • J. F. HessJr.
Conference paper
Part of the Residue Reviews book series (RECT, volume 55)


Polychlorinated biphenyls (PCB’s) were described in the scientific literature in 1881 by Schmidt and Shultz, and successful commercial production was achieved in 1930 (Hubbard 1965). The manufacturer of these compounds was Swan and Company who recommended their use in commercial applications for protective coatings, waterproofing, flameproofing, electrical insulation, and adhesives along with multiple miscellaneous uses (Penning 1930). PCB’s were marketed under the trade name of Aroclors by Swan and Company and then by Monsanto Company. Chemically the Aroclors are relatively inert; thus, they are not hydrolyzed by water and they resist alkalies, acids, and other strong corrosive chemicals. They are not appreciably volatile at normal ambient temperatures and have boiling points which are in excess of 275° C (Monsanto Company). They are stable to long periods of heating and can be distilled at ordinary pressure without any carbonization or decomposition. PCB’s are insoluble in aqueous media and very soluble in hydrocarbon solvents. Therefore, these chemical compounds have the chemical and physical characteristics to be persistent in the environment and accumulate up the food chain (Peakall and Lincer 1970).


Normal Ambient Temperature Monsanto Company Silo Wall Ensile Process Concrete Silo 
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Copyright information

© Springer-Verlag New York Inc. 1975

Authors and Affiliations

  • L. B. Willett
    • 1
  • J. F. HessJr.
    • 2
  1. 1.Department of Dairy ScienceOhio Agricultural Research and Development CenterWoosterUSA
  2. 2.American, Burt and Jones Co., L.P.A.CantonUSA

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