Document 8V2Qwp6owreMQaxjx1gK7rw0K

8^tbr 20# 1965 Kr, Xannath M. More# Diraetor - Industrial Hygiene United States Steel Corporation $85 Willlna Fern fUN Pittsburgh, Pennsylvania 30 Cur Hr. Horae 1 We are pleased to eonflrn the dissuasions you had with Hath Xiehols an4 Dele Snith, 8eptenber It, eeneemlng the tieumirl tlon* toxicity* ini handling of HBA-3I8. without revealing exeat percentage figures* we sen tell you the NC8-312 fomuiation contains ablerlasted biphenyl* phasphate aster* and a high viseeelty seiseted petrelevn fraetlea of low volatility* this fluid Is tain* transferred te our Organic Division Nwfceting Deportwant and ei--ralally will te fttftAib 318. Dm latel far /FxtHSufswm* z31s8rffrail sontala the fellewli* a*41ing and Hygiene CAOROtf) Avoid prolonged treathlat of vapors or mats* Avoid eontaei with eyes or prolong)S eentaet with skis. If akin sonteat assure* row wo ty woahlng with soap and eater, Pollening eye eentaet flush ulth eater. If slothing teeonaa oeahei elth fluid* launder tefore eearine again. we are eneleelns a eopy of the tevloeloftoal investigation report on MCA-318. Dila eorh eea done ty Yowngtr Inherit orlee* at. Louie* Hlaeourl* There le eneleeed alee a tahla eonparlag theee aeute or range* finding texlelty data with Pydraula Hi A-800. and 138 uhleh 2 understand your oonpawy has used in ether applieatlena for tone tine. Dm third oneloeure is a reprint of fir. freon'a puhlleatlen an the ehronle inhalation studies elth Arealore 18*8 and 183*. psrhapa 1 have sent you eeplee of this tefore tut Z'n taking this opportunity to eand a eepy te fir. Wright alee. DSM 018596 STLCOPCB4005140 Nr. Kenneth M. Morse Pag* 2 9/20/63 The operation of tha Allia-Chalmers front and loaders was witnessed by Niohols and 3*1th and daaarlbad to ua. We would strongly recommend tha Installation of a haat exehangsr on thaaa unit* to lower tha hydraulic fluid temperature below tha praaant 230f to 323?. We would oonaidar thaaa temperatures "elevated" and would not reoammend contlnuoua exposure to tha vapora from tha hydraulic fluid reservoir vant, Tha inatallatlon of a small aotlvatad charcoal f11tar on tha tank vant would eliminate unplaaaant fluid vapora. 1 an told that Vlton, aaala and "0* rings would eliminate or raduca tha occurranaa of leaks and loaa of fluid. Of course, tha final proof aa to wbathar or not thara night ba eignifioant exposures to tha chlorlnatad biphenyl or othar conponants of MC3-312 could ba datamlnad by air samples taken at tha breathing laval of tha oparatora of tha equipment. I reoagnize that this would not ba a ainpla procedure either fron tha standpoint of sampling an a plaaa of moving equipment or fren tha standpoint of tha laboratory analysis involvad. Tha abaanca of unplaaaant odors would ba nearly aa daflnltlva sines x an not snare of anyone who has avar experienced excessive axpoauraa when tha ehiorlnated biphanyl could not ba detected by snail. Tha ellainatlon of the "stinker* free tha MCS-318 foreulatloo is receiving priority attention by Monsanto Research, we hope to have tha problem solved soon and our Marketing people will keep you posted on our progresa. A sample label for aaah of the Pydraul fluids Is sneloesd. This, too, was discussed and Mr. Smith premised to sand them to you. Xf X can add any further information, please let aa know. Bast personal regards. Sincerely, EPWimjb Elmar P. wheeler Manager, Environmental Health Medical Department oat c. Craig Wright, Jt.P. U. 3. Steal Corp., 333 William Penn PI., Pittsburgh nr. w. M. Schrey U. 3. Steal Corp., Research Labe, Monroeville, Pa. Mack Nichols, Monsanto - Cleveland D. ?. Smith, Monsanto - 3t. Louis OSW 018597 STLCOPCB4005141