Document Jrgzng2G3ymYXnkpEJvkqd8VO

OCT 25 65 bcc: G. R. Buchanan-St. Louis A. G. Eades/ R. Davis/ D. Smith - St. Louis ^ ""E. P. Wheeler-St. Louis ' October 21, 1965 Mr. Kenneth M. Morse Director industrial Hygiene United states Steel Corp. 525 William Penn Place Pittsburgh, Pa. Dear Mr. Morsei This will confirm our telephone^conveiu^tioa of October 19 regarding our reoent work with MC3-312Vj A thorough investigation of the unpleasant odor of MCS-312 at elevated temperatures has been conducted by our research people. They discovered that there %/as e component present in the fluid in minor proportion which was responsible for the odor problem. This component was originally incorporated into the fluid as a scavenger and has sinoe proved unnecessary. As you and Z discussed this was a soybean derivative and as such would have an Objectionable odor at elevated tenseraturee. We removed this component from the fluid and then compared the odor of our fluid to the odor of your present phosphate ester at elevated temperatures. The concensus of our "board of smellers* was that one did not smell appreciably worse than the other. The toxicity of MCS-312 was discussed in Elmer Wheeler's letter of September 30. Zt seems that there is no more toxic danger Involved with MC3-312 than with other similar industrial fluids used by your company. Z have recently talked with Bill Preidline, who is in charge of maintenance of the equipment at Homestead which was using MC3-312. Pending your cements. Bill would like to reinstall our "modified* fluid la his equipment. For the present time we will refer to this product aa MSS 410. OSW 018600 STLCOPCB4005144 Mr* Kenneth M. Morse -2- October 21. 1965 We look forward to renewed business with you In this area. If I may be of further service in this matter, please let me know. very truly yours. MGtf/dg cat C Craig Wright* M.D. Mr. w. M. Schrey Mack Q. Nichols Sales Representative Functional Fluids I V j OSW 018601 STLCOPCB4005145