Document YreJ12epape83E0bya5Ngd3JD

October 10, 1969 Mr. Don KcBourai Polymer ProduoBujIa* S^etio* General IIectrio Company Noryi A?enu Selkirk, Hew fork 12158 Dear Hr* HcBoumies Our Boston office has asked me to forward comments eon- . earning the toxicity and safe handling of our product, Aiwlm iitiSS - Am you probably know, this material is a white to offwhite powder with a softening point between 150 and 170C. The distillation range is 435 to 450C. These data indicate that under only the moat extras conditions of temperature should there be significant volatlzatlon which could present any hazard froa the inhalation of vapo1 rs* . . ,' We do not have chronio animal toxicity data 00 this particular Aroclor. Range finding or acuta studies indicate that the oral lethal dose in rats is approxi mately 10 grams (10,900 milligrams) per kilogram of body weight* When applied to the skin of rabbits sa a 10$ solution in corn oil, the animals survived the highest doee of 2,510 mg/kg administered. These doses lead us to the conclusion that Aroclor 1268 is not particularly toxic from the standpoint of acci dental ingestion or massive skin exposure, v }' ' " * -' f* 'V In connection with the vapor inhalation mentioned earlier, we do not have chronio animal data for this particular Aroclor* Based on studies on other members of this series of compounds, we would suggest that a Threshold Limit Talua for eight hour daily Inhala tion would be between 0.5 and 1.0 milligram per cubic meter of air. Due to the physical t PLAINTIFF'S 1 EXHIBIT f >-3 Sip Ii 1 t IDS 003050 HARTOLDMONOOQ5818 Hr. Don WcBou^.It October 10, 1969 Fage Two characteristics of this compound, we feel it would require quite extreme handling or usage conditions to reach this concentration in the atmosphere, Good Industrial practice, however, would dictate that in applications where this type of compound was being heated, mechanical exhaust ventilation should be pa nro/vvoi4ded^* .. r. ts fb >V '. /I , *- ' J X have taken the liberty of sending a copy of this letter to Hr, John J, Ferry of your company la 3chene<HJady. Vaclc" is, 1 believe, ay counterpart with your company and is a personal friend of long standing. ?ery truly your. Elmer ?. Wheeler Manager, Environmental Health EFVijtt ' c.c. John J. Ferry b.c. John H. Gannon \\ 1: IDS 003051 HARTOLDMONOOQ5819