Document 10vp7r4xoJQn4o56njZxqLmDE

8. P. Wheeler - St. Louis October 15, 1968 Aroclors 1248 and 1254 (Santolubes 55 and 66) H. J. McConnell 0. 8. Walker Mew York Enclosed la a summary of the toxicity data on Aroclors 1248 and 1254 but referred to as Santolubes 55 and 66. This Is In reoponse to your request for Information to Cities Service. Our Interpretation of the animal toxicity data and potential hazards to humans Is a little, more conservative In this summary than would be the case if we were talking about using the Aroclors In heat transfer systems or hydraulic fluids. I believe this la necessary because there Is data that Indicate the handling of Aroclors In oil may present more hazards than handling the Aroclors per se. I hope you will be able to determine how Cities Service Intends to use the Aroclors. It Is quite likely that Monsanto would have to discourage the use of Aroclors In formulations of automotive lubricating oils while the use of theae chlorinated hydrocarbons In Industrial applications might not present too much risk. Elmer P. Wheeler cs HONS 09 7892