Document YGnoEY518rgBVJKdzBYZpE1qV

f'o*. Monsanto Chemical Company ctHr, T.K. Smith . 7 Mr. A.T. Beetirsgsrd - 7 Ai St. Louis " 4 SEP S3 Nr. B. 0. Banlgnua - 7 Dr. JT.S. Barra tt * London Dm* September 1, 1953 Dr. J.A. Gardner,- Pulner S'To Nr. I, Nstha R.lcrncYotir MM to A7B - 8/11/53 Dr./ Nr. J.P. StRleklcy . iocok N.B. Dyson - Newport Al Ruabon SA"ci AROCLORS* TOXICITT Mr. Beauregard baa asked tha Nodical Dapartaant to eonncnt on your lattar rafarrad to above. At 1 u aura you know. Aroalora cannot ba conaldarad nontoxlc, Tha Intarprotation of tha toxic propartlaa of a conpound. however, determine nhathar or not thara la any hasard aaaoolatad with tha apaelfla uaa of a conpound. To agr knowledge, thara la no haxard Involved In the uaa of transformers containing Aroelora as a substitute for other naterlals. To agr understanding. In tha United States this application of Aroelora la widely accepted and has not resulted in any difficulty fron a toxicological standpoint. Z cannot state whether or not a flash discharge night generate phosgene X believe, however, that any phosgene an generated would be In a vary swell proportion to tha total smoke and fumes resulting fron tha discharges. In lnstanoes where Aroclon as a heat txohange nsdlun, has bean subjected to fir* and high temper ature after a leak In equlpnent, tha clouds of breakdown products have bean Irritating but probably no wore so than ona would expoot frost the burning of any type of Industrial oil or chanical. I'm turn that Nr. Benlgnus will answer your questions relative to tha effaot of Aroolor On Insulating material* whan ha returns fron hie vacation next wank. as you indicated, wa are watching the uaa of the Aroelora as plasticisers la aaulalon paints. Wa do not reooansnd that they ba used In paints which night ba applied In confined or unventilated areas, particularly If tha paints night be used an heated surfaces. As you atetod, this la a case of worrying about the exposure of palntero who night apply sueh notarial! day in and day out rather than the worrying about those who night oooupy the room during or shortly after tha paint hag bean applied. 1 I TOWOLDMON0046042 WATER PCB-00037019