Document 7MEjjGOqkkmzNZ17JdYkgjJwV

I UHOKt >. & r.'f.Jor i ncrtHCNSG t TO : Brussels, Belgium 26th January, 1907 SWEDEN, AROCLOR DWigb G. R. Buchanan - St Louis oo p. g. jJcnignuo - st;^ Louis D. S/Cameron -^Brussels Dr ./n. V J w. Hardy - London ' Dr. R. r(ir.r.t^lCelly - St. Louie R.A. StoiTnrod - St. Louis Wo recently sent you a translation of a Swedish newspaper article referring to the identification in nature of polychlorinated biphenols. Because some of the uses claimed fox the materials fell in line with the uses of our own chlorinated diphenyls, we made a point, during our recent visit,to Sweden, of visiting the research institute involved and discussing their particular programme of work. To eliminate any earlier cognsJ.pn_that there may have been,. l~snould like cd~emohasrse that there is no ~dou*nt tHaCtho | cfiCTuIcal which is the subiect of the investigation aniftfru news release, is chlorinated''diphenyl i.e. Aroclor. . ' The company that supplied the mass spectrometer which was used in the research programme, ir. fact have recently put' out a press release on this work. Although I am horrified by some of the headlines in this ptuso release, it doe3 basically describe the research programme carried out in Sweden, and describes in clear terms how chlorinated diphenyls were identified. I therefore, enclose a copy for your files. . Jensens only aim in life as an analytical chemist, was to identify the substances found in his research work on the occurrence of insecticides in nature. The unfortunate'aspect of the situation is tho comments which have been added to Jensens work. He showed what was present and unqualified people have made statements as to the possible effect of what he has found. Summarising the publication position, there wero original articles covering the Stockholm conference in the Swedish daily press, and these reports were picked up also by the Danish press. You will have seen from D.V.N. Hardy's memo of the 12th January that it has also been picked'up by the Shell Chemicals Laboratory in Kent, U.K. Jenson also divulged that he had been contacted by the Swedish American press agency who intended to include information about this research work in their monthly review "The Swedish American Journal". There is additionally the press review issued by LKD Productor AB which 1 imagine to have boon sent to a number of technical journals. MOMS 098152 G. R. Buchanan St. liouis - 2- 2GCh January, 1967 . I Effect in Sweden . This' matter was raised with uc hy every capacitor manufacturer in Sweden that we visited. Fortunately there has not been .' : too much adverse comment as yet from plant workers since .. : ; they have not associated the polychlorinated biphenols mentioned ; , in the articlo witli Aroclor or Pyralenc used in the Svfcdisli . ! factories. Jensen, however, stated that he had been .approached ; : pors^alJ.y.by^ai'orai._:V-ox-ke.L .a3s.o.ciafced_u;ith..'chlorineted ' . j . diphenyls* ~for noiv-eiectrical uses and these workers were quite ' worred_ao to the posVioIe efffe'Ct-firt~fc'hVxr'hea'ith. ' ^Future Research Arrangements are being made in Sweden for this work to be taken over by one of the medical institutes who hope to study the toxicology of the poloychlorinated diphenyl residues a.t the levels of concentration found hr/ Jensen. Additionally a geographical survey is to be carried out to try and determine whexo the highest concentrations of residue arc appearing' and, if possible, to detect from this the method of escape so that more precaution:'; can be cakv.ii. r.'e ware asked by Jensen if it was possible for Monsanto to supply any samples of the pure isomers of chlorinated diphenyl since l:i3 work indicated at the moment that the lower chlorinated isomers are fairly easily metabolised, and the potentially more dangerous constituents are the more highly chlorinated members. If he can get hold of pure isomers, ho would like to carry out some work on comparitive rates of metabolisation. Jensen is forwarding me copies of his mass spectrographs and details of cample preparation so that wo have all the details of liis research work. O' The point that I have de to Jensen is the need for'care in any further publicati; . of his work -which is made. He accepts that the toxicology oi chlorinated diphenyls should only be discussed with detailed information about exposure concentrations and exposure times and that generalised statements out of context can only arouso undue public concern. If any technical journal takes up the press release from the LICE Vroductor Company, there ic little that Monsanto could, or should do. in the way of publishing rebuttals. Wo do not want, personally as Monsanto to yet too involved in thin question. I am hopeful that wo MONS 098153 /.... .1 r- ' G. R. Buchanan . St. Louie - 3- 26th January, 1967 wight persuade Jensen himself to write a letter defining the true extent of his own research work and placing his results in their proper perspective. It would certainly ho helpful in gaining hie further support if vie w>sro able to make available to him any small quantities of pure isomers. Since we are not alone in supplying polychlorinated diphenyls to the Scandinavian market, I have drawn this matter to the attention of the other askare1 manufacturers in Europe. As you will see from the press release one of the major points that is made is the difficulty in disposing of waste chlorinated diphenyls and again I must mention that constructive recommendations for the safe disposal of our materials would bs most helpful. . , . ;i . i : i|tm Mew>" *vnrrwrM*nnr ?soi;u MQNS 09B154