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© 1986 Oxford University Press

research-article

Teratogenicity Studies of Alkylaryl Phosphate Ester Plasticizers in Rats1

E. C. ROBINSON*,2, B. G. HAMMOND*, F. R. JOHANNSEN*, G. J. LEVINSKAS* and D. E. RODWELL{dagger},3

*Department of Medicine and Environmental Health, Monsanto Company St. Louis, Missouri 63167 {dagger}International Research and Development Corporation, Mattawan Michigan 49071

Teratogenicity Studies of Alkylaryl Phosphate Ester Plasticizers in Rats. Robinson, E. C, Hammond, B. G., Johannsen, F. R., Levinskas, G. J., and Rodwell, D. E. (1986). Fundam Appl. Toxicol. 7, 138-143. Santicizer 141 plasticizer (2-ethylhexyldiphenyl phosphate) and San-ticizer 148 plasticizer (isodecyldiphenyl phosphate) were tested for teratogenic activity in Charles River COBS CD rats. Groups of 25 mated females were given 0, 300, 1000, or 3000 mg/kg/day by gavage on Days 6 through 15 (Santicizer 141) or 6 through 19 (Santicizer 148) of gestation. Mean maternal body weight gains were slightly and severely reduced at the mid- and high-dose levels of Santicizer 141, respectively. Body weights were not affected by treatment with Santicizer 148. Most malformations found in groups treated wtih either plasticizer occurred as single incidences and have been observed in historical controls. Thus, no teratogenic response was observed in rats after treatment with either of these two alkylaryl phosphates during the period of organogenesis.


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