Document g2JZyxZOQ8Zd75Oor1jaarEZe

228 BOSH STREET * SAN FRANCISCO 20 CALIFORNIA PKRBONNBL DCPARTMKNT C. F. OTT November 18, 1963 A. J, ALSTROM O. H. BARBBR O. E. BRITTON W. H. JONKB IUHI|I PU<.IQATtON PYDRAUL AC Monsanto Chemical Company 800 North Lindbergh Boulevard St. Louis 66, Missouri Gentlemeni One of our refineries Intends to use Pydraul AC in all air compressors. Since the air is used in some Instances to supply breathing air equip ment, ve would appreciate answers to the following questions! 1. What is the effect of cylinder wall temperatures on Pydraul AC and what decomposition products may be expected? 2. What concentrations of pydraul AC and/or decomposition products may be expected in the compressed air supply? 3. How effective are the standard filters provided by safety suppliers in removing Pydraul AC and its decom position product from air? In addition, we would appreciate having you complete the attached sheet for the confidential use of our Industrial Hygiene Section. Very truly yours Attachments J. . Assistant to the Manager Safety Division MONS 091085