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TR-479: Coconut Oil Acid Diethanolamine Condensate

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TR-479: Coconut Oil Acid Diethanolamine Condensate NTP TECHNICAL REPORT ON THE TOXICOLOGY AND CARCINOGENESIS STUDIES OF COCONUT OIL ACID DIETHANOLAMINE CONDENSATE (CAS NO. 68603-42-9) IN F344/N RATS AND B6C3F1 MICE (DERMAL STUDIES) NATIONAL TOXICOLOGY PROGRAM P.O. Box 12233 Research Triangle Park, NC 27709 January 2001 NTP TR 479 NIH Publication No. 01-3969 U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service National Institutes of Health FOREWORD The National Toxicology Program (NTP) is made up of four charter agencies of the U.S. Department of Health and Human Services (DHHS): the National Cancer Institute (NCI), National Institutes of Health; the National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health; the National Center for Toxicological Research (NCTR), Food and Drug Administration; and the National Institute for Occupational Safety and Health (NIOSH), Centers for Disease Control and Prevention. In July 1981, the Carcinogenesis Bioassay Testing Program, NCI, was transferred to the NIEHS. The NTP coordinates the relevant programs, staff, and resources from these Public Health Service agencies relating to basic and applied research and to biological assay development and validation. The NTP develops, evaluates, and disseminates scientific information about potentially toxic and hazardous chemicals. This knowledge is used for protecting the health of the American people and for the primary prevention of disease. The studies described in this Technical Report were performed under the direction of the NIEHS and were conducted in compliance with NTP laboratory health and safety requirements and must meet or exceed all applicable federal, state, and local health and safety regulations. Animal care and use were in accordance with the Public Health Service Policy on Humane Care and Use of Animals. The prechronic and chronic studies were conducted in compliance with Food and Drug Administration (FDA) Good Laboratory Practice Regulations, and all aspects of the chronic studies were subjected to retrospective quality assurance audits before being presented for public review. These studies are designed and conducted to characterize and evaluate the toxicologic potential, including carcinogenic activity, of selected chemicals in laboratory animals (usually two species, rats and mice). Chemicals selected for NTP toxicology and carcinogenesis studies are chosen primarily on the bases of human exposure, level of production, and chemical structure. The interpretive conclusions presented in this Technical Report are based only on the results of these NTP studies. Extrapolation of these results to other species and quantitative risk analyses for humans require wider analyses beyond the purview of these studies. Selection per se is not an indicator of a chemical’s carcinogenic potential. Details about ongoing and completed NTP studies are available at the NTP’s World Wide Web site: http://ntp-server.niehs.nih.gov. Abstracts of all NTP Technical Reports and full versions of the most recent reports and other publications are available from the NIEHS’ Environmental Health Information Service (EHIS) http://ehis.niehs.nih.gov (800-315-3010 or 919-541-3841). In addition, printed copies of these reports are available from EHIS as supplies last. A listing of all the NTP reports printed since 1982 appears on the inside back cover. NTP TECHNICAL REPORT ON THE TOXICOLOGY AND CARCINOGENESIS STUDIES OF COCONUT OIL ACID DIETHANOLAMINE CONDENSATE (CAS NO. 68603-42-9) IN F344/N RATS AND B6C3F1 MICE (DERMAL STUDIES) NATIONAL TOXICOLOGY PROGRAM P.O. Box 12233 Research Triangle Park, NC 27709 January 2001 NTP TR 479 NIH Publication No. 01-3969 U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service National Institutes of Health 2 Coconut Oil Acid Diethanolamine Condensate, NTP TR 479 CONTRIBUTORS National Toxicology Program NTP Pathology Working Group Evaluated and interpreted results and reported findings Evaluated slides, prepared pathology report on rats (27 March 1997) R.D. Irwin, Ph.D., Study Scientist D.A. Bridge, B.S. M. Butt, D.V.M., Chairperson J.R. Bucher, Ph.D. Pathology Associates International J.R. Hailey, D.V.M. R.E. Chapin, Ph.D. National Toxicology Program J.R. Hailey, D.V.M. J.R. Leininger, D.V.M., Ph.D. J.K. Haseman, Ph.D. National Toxicology Program J.R. Leininger, D.V.M., Ph.D. P. Mann, D.V.M. R.R. Maronpot, D.V.M. Experimental Pathology Laboratories, Inc. D.P. Orzech, M.S. R. Miller, D.V.M., Ph.D. G.N. Rao, D.V.M., Ph.D. North Carolina State University A. Radovsky, D.V.M., Ph.D. J.H. Roycroft, Ph.D. National Toxicology Program C.S. Smith, Ph.D. G.S. Travlos, D.V.M. Evaluated slides, prepared pathology report on mice D.B. Walters, Ph.D. (8 May 1997) K.L. Witt, M.S., Integrated Laboratory Systems, Inc. M. Butt, D.V.M., Chairperson Pathology Associates International Battelle Columbus Laboratories S. Botts, M.S., D.V.M., Ph.D. Conducted studies, evaluated pathology findings Experimental Pathology Laboratories, Inc. J.R. Hailey, D.V.M. P.J. Kurtz, Ph.D., Principal Investigator National Toxicology Program (14-week and 2-year studies) R.A. Herbert, D.V.M., Ph.D. M.R. Hejtmancik, Ph.D., Principal Investigator National Toxicology Program (2-year studies) J.R. Leininger, D.V.M., Ph.D. J.D. Toft II, D.V.M., M.S. (14-week and 2-year rats) National Toxicology Program M.J. Ryan, D.V.M., Ph.D. (14-week mice) R. Miller, D.V.M., Ph.D. A.W. Singer, D.V.M. (2-year mice) North Carolina State University A. Yoshida, D.V.M., Ph.D., Observer Experimental Pathology Laboratories, Inc. National Toxicology Program Provided pathology quality assurance Analytical Sciences, Inc. J.F. Hardisty, D.V.M., Principal Investigator Provided statistical analyses S. Botts, M.S., D.V.M., Ph.D. R.W. Morris, M.S., Principal Investigator P. Mann, D.V.M. S.R. Lloyd, M.S. N.G. Mintz, B.S. Dynamac Corporation Prepared quality assurance audits Biotechnical Services, Inc. Prepared Technical Report S. Brecher, Ph.D., Principal Investigator S.R. Gunnels, M.A., Principal Investigator J.R. Dias, M.S. L.M. Harper, B.S. A.M. Macri-Hanson, M.A., M.F.A. D.P. Shaw, B.A. 3 CONTENTS ABSTRACT ............................................................ 5 EXPLANATION OF LEVELS OF EVIDENCE OF CARCINOGENIC ACTIVITY ............ 10 TECHNICAL REPORTS REVIEW SUBCOMMITTEE ............................... 11 SUMMARY OF TECHNICAL REPORTS REVIEW SUBCOMMITTEE COMMENTS ......... 12 INTRODUCTION ........................................................ 15 MATERIALS AND METHODS ............................................... 17 RESULTS .............................................................. 27 DISCUSSION AND CONCLUSIONS ........................................... 51 REFERENCES .......................................................... 57 APPENDIX A Summary of Lesions in Male Rats in the 2-Year Dermal Study of Coconut Oil Acid Diethanolamine Condensate ........................ 61 APPENDIX B Summary of Lesions in Female Rats in the 2-Year Dermal Study of Coconut Oil Acid Diethanolamine Condensate ........................ 89 APPENDIX C Summary of Lesions in Male Mice in the 2-Year Dermal Study of Coconut Oil Acid Diethanolamine Condensate ........................ 115 APPENDIX D Summary of Lesions in Female Mice in the 2-Year Dermal Study of Coconut Oil Acid Diethanolamine Condensate ........................ 147 APPENDIX E Genetic Toxicology............................................. 179 APPENDIX F Hematology and Clinical Chemistry Results ............................ 195 APPENDIX G Organ Weights and Organ-Weight-to-Body-Weight Ratios .................. 201 APPENDIX H Reproductive Tissue Evaluations and Estrous Cycle Characterization .......... 205 APPENDIX I Chemical Characterization and Dose Formulation Studies .................. 209 APPENDIX J Ingredients, Nutrient Composition, and Contaminant Levels in NIH-07 Rat and Mouse Ration .................................. 219 APPENDIX K Sentinel Animal Program ........................................ 223 4 Coconut Oil Acid Diethanolamine Condensate, NTP TR 479 5 ABSTRACT n = 7, 9, 11, 13, or 15 COCONUT OIL ACID DIETHANOLAMINE CONDENSATE CAS No. 68603-42-9 Chemical Formula: C(7+n)H(15+2n)O3N Molecular Weight: 280-290 Synonyms: Cocamide DEA; cocamide diethanolamine; coconut oil diethanolamine; N,N-bis(hydroxyethyl)coco amides; N,N-bis(hydroxyethyl)coco fatty amides Trade names: Clindrol 200CGN; Clindrol 202CGN; Clindrol Superamide 100CG; Comperlan KD; Comperlan LS; Comperlan PD; Conco Emulsifier K; Elromid KD 80; Empilan CDE; Ethylan LD; Ethylan A 15; Lauridit KDG; Marlamid D 1218; Monamid 150D; Monamid 150DB; Ninol 1281; Ninol 2012E; Ninol 2012 Extra; Ninol P 621; P and G Amide 72; Purton CFD; Schercomid CDA; Steinamid DC 2129; Steinamid DC 2129E; Varamide A 2; Varamide A 10; Varamide A 83; Witcamide 82; Witcamide 5133 Coconut oil acid diethanolamine condensate, a mix- 14-WEEK STUDY IN RATS ture of fatty acid diethanolamides of the acids found Groups of 10 male and 10 female F344/N rats in coconut oil, is widely used in cosmetics, shampoos, received dermal applications of 0, 25, 50, 100, 200, soaps, and related consumer products. Because of the or 400 mg coconut oil acid diethanolamine conden- lack of information about potential risks associated sate/kg body weight in ethanol, five times per week with long-term exposure, coconut oil acid diethanol- for 14 weeks. All rats survived until the end of the amine condensate was selected as a representative of study. Final mean body weights and body weight the diethanolamine chemical class for evaluation
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