Document B6164j9kBEoD8KoVO1M55Lek

r boat C. Petcay'j. jr, Rodor 1650 P. L. Slayton 1650 J. S. Pullman November * 1971 07073 Door Nr. Llntaert for our telephone eonvereatlom of Homtw In holding your purehnee order* luiahar 1983T# for two draw of Thamlnol PR-1. X understand thn Therudaol PR-1 fluid la uaad In flftoon small heating systems in tha produotlon of flana ratardaat plaatlelsara and arona eherniasla for eosaatlos. Va ara tonearned about potaotlal leakage of tha boat traaafar fluid Into tha and uaa produota in your plant. As X lmUaatad during our aonvsrsatlon# tha Thamlnol PR-l boat tranafar fluid oontains polyohlorlnatad biphenyl* (PGBs) of varloua types. Tha PCI aonoontration la our environment haa ooaa undar tha serutlny of varloua governmental aganslaa and aalontlfla laboratorlaa. In sons studies* aartaln PCBa hava boon found to ba a persistent environmental sontanlnant. sad possibly9 injurious to oortaln forms of bird* aquatlo and snlaal llfo. Accordingly* it la vary laportant that PCBa ba leapt out of tha food chain. wo foal that any leakage of tha Thamlnol PR fluid Into produets used in ooanatlaa would ba an undsslmbla situation. In this regard* wo suggest you consider tha uaa of an alternate Thond nol heat traaafar fluid -- one that doaa not eontala pcbb. Two fluids* Thamlnol 53 and Thamlnol 66* am considered to ba satisfactory alternates for tha Thamlnol PR-1 fluid pre sently la your system. X hava attached physical property data on Thamlnol 55 and Thamlnol 66 fluids. So Isotlon of Thamlnol 55 or 66 ena ba baaed on your heat traaafar fluid uaa tempera ture. At tamp era furaa below 585*? Themlnol 55 would ba suit able. At t nm|iantiiram above 585*? Thamlnol 66 would givu long tarn parfomeaea. Thamlnol 66 aaa ba usad at tampersterse near 650*?* if required. DSW 018193 STLCOPCB4004738 r mtum ----iMl W MM 6C fcft-- * fl-- NHHM ----AM of t-T----lani ---i flMli* * MUM m-minil sStiSai piwSw iKt!1>?5Sj[yfSrrS ns l-- of Wt ftlMMM fl*l-- Ttw Mm an Th--anl 55 la aoa to fear 4r-- patlttN i Aiatl A1--0* WKWil a Mm fr-- tha Th--Uni -- flalA at U&B tl--. All -- fluii It-- f1 tram yoar ay*t-- ahaalA to ittunwi f--l--t pr--olA to or lang--i Illiaolo ptet for ImImmUm* -- will --1-- oar ioil ItiMWllo tOuic of 34/lt. oa tfelo a--!-- Aftl X ill holA yoar utrtf or--r mHkU yoa ha-- ho* tt-- to a--loot# too alt-- fl--Itol flat-- for yoar appllaatioa, * Xf yoa ha-- top q--atlo-- iri--ii this ----lua pi-- taat Jfmj ralloaa* oar Th--taol r---- amoll-- la Mw To-- City* opm la tt* LnU, Joy Ftaliaan*o Now To-- --nat l*i ffeoaaato C--ny 977 Vo-- A-- mm To-- .. 10017 (9X8) '4 * tV*. *^4 TOry traly yoa-- 0w l< Soaoh r--at flpoalallot b--t T--mfar yitti-- osw 018194 STLCOPCB4004739