Document bBQ8Yyq3jM05oMQRzyw1YmnBg

boo* I. s Barton * VIM V. tu hiehnrd - VSXCB *. *. Solly 0, Ptki - CNN V. r. Vnyohoff/*. K* Satelk/ J. X* pprlocate X. S. Toekor - nCX March 19, 1969 Mr. Aotort Rook rvrcA 620 Contral Amman PulIdiot 2 9 Aloaod*. California 9A>ii tear Mr. Aooki In aoaorteaoo with oar Ur. Hobart Kollor'o oomroroatlon with yon loot wook X tevo boaa aak*4 to reply to tko following qvHllona which X oadarotaad jroa ralMli 1, vould polyohlor1m tod tlphrayl typo anterlnla nook no thoao in oar Aroclort bo oxpottod to to foaad la doaootli wanton (teooohoXd)T Vo do ant know of nay uao of oar Aronloro which weald land to ikoir proooato la dawn* tin or kooookold non tea. 2. voald polychlorinated 11phony 1 typo anterlolo tank an thoaa fooMd la oar Arooloro bo oxpoated to to found la ladontrlal wonteof Qm of tte principal anrleote for oar Nl (polychlorinated tlpkoayl) aoterlalo In la olootrloal apnliaatloao okoro ttey oro wood on flro ronlnteafe lonmlatiat flnldn for traonfMontn tad aopnolton. la thin onn tko antnr&ol . tin oonplotoly nnnlnd la aotnl aoatainoro. Vraanforaor non In for aaoipaaat la niton itort 15,000 volte rotter ttea tko fan!liar niton of troaoforaor oooa oloat pornr llaoa for dtatrlbotloa to hoaaokoido. * XI 14 m laproooloa that tko traaaforanr nad oapaoltor oonftetaroro no not tern o lot of npilUfO or aooto of tko flnldn chink night oad op la Ladootrial wootan. .. Sooaadly, tko ladoo try tea for aoao tint prantiood roolaaation and rotoo of tkono finite fron old ofotpnoal wkiok aonds OSM 020351 STLCOPCB4008280 Mr, Retort Rook -2 March 19# 1969 Another induetrial use ojT the liquid PCBs Id In heat trenofer eppllostlone where the riuid runetlone in e eloeed eystcu. A|1a the fire rwlitiMt MrtiUriitif of the KBi lead* to this um as a substitute for other fleasable oils, for econoule reasons the bust transfer syatcos should be Maintained In good repair with a rrt.nlaw ef leakage wldeh sight conceivably be washed to pleat sewers, 2a the functional fluid uaas we have carried ewt a arogrea for several years for tha reelasatlea ef used Pegs, rot are also used la several 'plastic-type* applications, Sueh uses include specialty adhesives# sisstasers end specialty eurfeoe coatings* Is these oases the PCI beeewee an latagrsl part of tbs solid autorial aod spillage or wastage of the PCg* would else# X believe, he held to a slalMSU 3, If the PCBs sight be found is industrial wasted, would this be s result of s breakdown of s aorfceted product following use or ss s wests frog s aenufae taring prowess in wldeh pegs ere asedt The PCis ere stable nsterials which would net be sspeeted to 'breakdown* or degrade to asp extent la rennaaended usea. . would ehloriostdd biphenyls be found la eil/gssoline refinery efflusatsf X an net autre ef aay uses ia the petreleun ladsatry which should result ia PCM ia rufioery effluents, S Do ws have tcocislty data aapeddly far fish? We have scute ssioul sereeaUg toxicity data eu all of the ertiers ef ear Areeler series* X have enslesed a Xerox copy ef tables showing tbs gnasrml physical properties of our Aroslers* Attbs betton or the table X have addtd to tha printed data lsforuatlos relative to the oral lethal doss Is rsta sod tbs skin ninlaua lethal dose ia rabbits. These data indicate that the Areslera oasaet be considered seriously teals frog s staadpeint of scute exposures. lou will note that tha ssaplss were edwt,metered in various aeosentrstlsas deseeding on tbs Useosltyof the ssaplss sad their solubilities is sera oil. DSW 020352 STLCOPCB4008281 hr* Robert Rock -3- March 19# 1969 Z have tnolM4 kite reprint which dtaoribn the chronic vapor toxicity of two of the Aroclore, Aroelor 124a cad Arcelor 125*. Tho wejrtt <toartb4 la thin poblleotioa hnn 1n4 to tho nUblUMnnt of i threshold Unit value for Industrial environment for then# two naafecre of tho Aroelor hHm of 1.9 ( per cubic actor of air Mi 0J ac respectively. Tea will not# that tho aathora of the publication eoggcctcc TLVa of twice the tralaaa established hr the Aaarleaa Conference of Oeeeraaeatal Industrial hyglcalsta* We have recently contracted with a ocaseltlag laboratory to ran flah tonicity stwdlee. X doht that we will bo able to flah 96-hoar TWs because of tho lew aolabllity of tho Aroclore. Oar analyst* have recently deionised for exaaple the following solubilities in tap actor at rooa toaporatara. Amiw 1*4* 1849 803 10 106 14 1*3* 30 t* Vo haven't eoapleted ear work oa the fall eerlee ef mapeanda bat we have feeed that* aa night be axeeeted* solubility deereaoee narkedly sitk inereeae la chlorine content* Perhaps Z shoald aaatloa at this poiat that the w--rlool designation of tho Aroolera hao aeaalag, faoelflaolly tho 1*90 eerlee indicates biphenyl* The two owtoogaaat aartifa indioata parecatena chlorination. Daw# Aroelor 124* la biphenyl chlorinated to tho extent of 4*p. Tho 3400 eorioo are tarphaarlo end egela the loot two naan era iadlaato tho degren afehUrlnetlea. Thao* Aroelor 5*60 u torphaayl chlorinetod to fo^. Tho 4400 and 2500 aorloa are aixtnrea of blphaayla and terphenyle ehlarineted te 654*. 6. Can we provide ehaaieal/ahysleol property data far ear Aroelor prodaeta - aapaalally aeiwtlllty ia watarT X believe Z have anewered thia qaeatica ia the diaeaaaion above* DSW 020353 STLCOPCB4008282 Mr* Robert Rook -4- March 19* 19(9 la eo(UMtlA with the recent publication 1a Un Sail WimImo Chronicla oonoareina tha RCha Mooaanto haa eade avallabla the taoloaed Bwainti, It X eaA ba of any further tealstance, pleat* Utr ol haaltata to lat m Know. Sincere1/, srvicja Sacloturae 9 llaar r. Vhaalar MMiacar, toviraanul health 1. Table on general physical properties of the Aroclor chlorinated compounds 2. Monsanto March 3 abatement concerning article in S. P. Chronicle 3. AIHA hygienic guide chlorddiphenyls and reprinjb "The toxicity of the Vapors of Aroclor 12U21and Aroclor 1254 OSH 020354 STLCOPCB4008283