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U.S. Department of Energy
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Cocarcinogenicity of phenols from Estonian shale tars (oils)

Journal Article · · Environ. Health Perspect.; (United States)
DOI:https://doi.org/10.1289/ehp.7930177· OSTI ID:5760524
Many phenols have carcinogenic activity. The Estonian shale oils contain up to 40 vol % phenols. The promoting activity after initiation of phenols of Estonian shale oils was tested in mice with a single subthreshold dose (0.36 mg) of benzo(a)pyrene. C57B1 and CC57Br mice were used in skin painting experiments. Weak carcinogenic activity was found in the total crude water-soluble phenols recovered from the wastewater of a shale processing plant. In two-stage experiments a clear promoting action of the total crude phenols was established, whereas the fractions A and B (training reagents), obtained by selective crystallization of the total phenols exerted a considerably weaker promoting action. Epo-glue, a commercial epoxy product produced from unfractionated crude phenols, had no promoting activity, which may be due to the processing of the phenols involving polymerization.
OSTI ID:
5760524
Journal Information:
Environ. Health Perspect.; (United States), Journal Name: Environ. Health Perspect.; (United States) Vol. 30; ISSN EVHPA
Country of Publication:
United States
Language:
English