Document MoRoeGvq3LBbKaKoymKJavMM7

July 30, 1964 J TG I '! ~ whh! M NJI R E K "-- fi AM ! ~'j EPW; Nr. J. 0. Sohllts, Supervisor Industrie! Hygiene Department The Bendix Corporation Kansas City, Missouri o4l4l Dear Hr. Sohlltst In aooordanos with Nr. Shaw's July 20 letter to you, I an forwarding Information relative to the toxloity and safe handling of (THERMINQI* PR produots. The THERMXNQL FR flulda are speolfioally refined grades of chlorinated biphenyls or AROCLCRS. I have enclosed a reprint reporting the results of ohronlo vapor inhalation studies with AROCLGRS 1242 and 1254. Enclosed also is information relative to AROCLCR 1246. I believe these enclosures will provide information relative to toxloity, safe handling and usage. Your letter of July 23 indicated that you were also interested in Information relative to identification of fumes or vapors evolved at elevated temperatures. In the work done at Kettering Laboratories, the fluids were alloyed to drop onto heated metal surfaces at 1030 and 123CPf The vapors and decomposition products were then carried into the animal exposure chambers. The principal decomposition products were coot, CO, COj, HC1, phenoiloe and aldehydes. The exposures were so severe that the anlaals were obscured by the particulate matter, smoke, etc. in the ehamber. At the end of the exposure the animals were black from soot deposition. In spite of these excessive conditions which humane would not voluntarily endure without respiratory protootion, the survival rate of the animals was similar to that when petroleum fluids were thermally deoomposed. Z should point out that in testing the petroleum bees fluids, the experimental equipment had to be modified to prevent fleas carry-over from the petroleum fluids into the animal chamber. Nr. Shaw included with hie letter the report of an incident where a thenainol fluid spewed Into a hot fire bom. We have heard of several instances where, due to accidents. OSW 020239 STLCOPCB4008168 Mr. J. 0. Schilts Pag 2 7/30/64 J our fire resistant fluids have sprayed onto molten natal or other hot equlpaant. As night ba expected, tha workroom haa bean contaminated with vapors, aarld odors and irritating substances depending on tha amount of fluid spill or leakage and tha fpsraturas involved. In no oaaa hava we hoard of ssrlous injury to paraonnal. Thara haa baan suffiaiant opportunity zod approprlata individuals to shut down tha equlpnant and laava tha area, ratuming subsequently with aithar raspiratory protaation or aftsr tha araa has baan olsarad by vantllation. If you hava any additional quastlons after reviewing tha anolosad material, plaasa do not hesitate to let os know aithar by latter or calling aa collect. Our nunbar is -- araa coda 314, WYdotaa 3-1000, extension 2196. Very truly yours. EPWiaJb Elnsr r. Wheeler, Manager Environmental Health Medical Department cot S. Shaw beet 0. R. Buchanan/R. Davis T. C. Tuppar TTUPP W. L. Buchholz WBUCH D. Roush - Queeny OSW 020240 STLCOPCB4008169