Document rx3o10wB8LO0VvbbMzoj6aMRG

I Monsanto Monsanto Company 800 N. Lindbergh Boulevard St. Louis. Missouri 63166 Phone: (314) 694-1000 February 9, 1970 ORGANIC CHEMICALS DIVISION Dear Sir: Recently several newspaper and magazine articles have been published indicating that Polychlorinated Biphenyls (PCBs) have been discovered at some points in some marine, aquatic and wildlife environments. The quantities detected are said to be in the parts per million and parts per billion categories. It is claimed that the PCBs found strongly resemble chlorinated biphenyls containing 54% and 60% chlorine by weight. Products which are sold by Monsanto under the trade names of Aroclor 1254 and 1260 do contain chlorinated biphenyls. In addition to Aroclor 1254 and 1260, Monsanto sells certain functional fluids containing Aroclor 1254. These include Pydraul 625, Pydraul AC, Pydraul AC - Winter Grade, Pydraul 540, Therminol FR-3 and certain dielectric formulations. Several other companies around the world also produce products containing chlorinated biphenyls. As your supplier of Aroclor 1254 and 1260 and formulated products containing 1254, we wish to alert you to the potential problem of environmental contamination as referred to in the newspaper and magazine articles. We would like to point out the following additional facts. 1. Products such as Pydraul 90, 135, 230, 312, A-200, F-9, 150 and 60, Turbinol 153 and Therminol FR-1 and FR-2 are not formulated with Aroclor 1254 or 1260. 2. PCBs with a chlorine content of less than 54% have not . been found in the environment and appear to present no potential problem to the environment. 332800 OS'N STLCOPCB4079376 J 2- - We have developed, and are now testing, new formulations to replace the Aroclor 1254 and 1260 components in our Pydraul products. The new products appear to be equal in performance and to have similar physical properties. We feel that all possible care should be taken in the applica tion, processing and effluent disposal of these products to prevent them becoming environmental contaminants. Of interest to you may be an article in Chemical Week, October 29, 1969 regarding water pollution standards set by each state in the Union. It is attached. This article reflects that good manu facturing practice in the future may require that no products used by any company should find their way into waterways. Sincerely yours, nlc Attachment /C r.. < Donald A. Olson Director of Sales Functional Fluids Group 0S\N 332801 STLCOPCB4079377