Document aJQB45Zb9ZdeN2ZD9JrRobDGN

0CT 25 .,? bcci G. R. Buchanan-St. Louis A. G. Eades/ R. Davis/ Dx Smith - St. Louis "E. P. Wheeler-St. Loui October 21. 1969 Hr. Kanosth m. Mors* Director Industrial Hygiene United State* Steel Corp. 529 William Vann,Place Pittsburgh, Pa. Dear Mr. Horset This will confirm oar telephonm^UOnveuMioa of October 19 regarding our recent work withWC3-312Vj A thorough investigation of the unpleasant odor of hcs-312 at elevated temperatures has been conducted by our research people. They discovered that there was a component present In the fluid in minor proportion which wae renponaibla for the odor problem. This component wae originally incorporated into the' fluid as a sosvengsr and baa ainoe proved unnecessary. As you and Z discussed this was a soybean derivative and as such would have an Objectionable odor at elevated temperatures. We removed this component from the fluid and then conpared the odor of our fluid to the odor of your present phosphate ester at elevated temperatures. The concensus of our "board of smellers' wae that one did not smell appreciably voree than the other. The toxicity of HCS-312 wae discussad In rimer Wheeler's letter of September 30. Xt seams that there is no more toxic danger Involved with HCS-312 than with other similar industrial fluids used by your company. X have recently talked with Bill Preidline. who Is in charge of maintenance of the equipment at Homestead which wee using NCS-312. Pending your comments, Bill would like to reinstall our 'modified' fluid in hie equipment. For the present time we will refer to this product as KGS 410. MUNS 090923 Nr. Kenneth M. (torse 2- Oetober 21. 1963 we look forward to renewed business with you in this area. If X may ha of further service In this matter, please let os know. Very truly yours. MSN/dg cci C. Craig Wright, M.B. Hr. w. M. sohrey Mack a. Nichols Sales Representative Functional Fluids 9 V J, MQNS 090924