Document Naz7K84ea6Ee10NVGyGY6D8y

L. B. Crider W. J. Kroenke J' JS -/If? ul: , Avon Lake Technical Center Brecksville Research and Development <3 icr.tr 12/17/73 Determining Exposure of Personnel to Gaseous Vinyl Chloride. This note is a response to our conversation of December 13r 1973. It reports my opinions about the possibility of using inorganic or organometallic detector systems for either detecting or providing a cumulative measure of exposure to VC1. Ideally, such systems would be in the form of a badge, similar to the ones we now wear to detect exposure to x-rays. But with one additional feature. This is the ability to show, probably by means of a color change, immediately when a person has been exposed to some significant quantity of VC1. My conclusions and the discussion which follows are based on searching Chemical Abstracts up to July, 1972, and surveying the review literature pertaining to the formation of metal-vinyl compounds. The scientific literature reports only a limited number of complexes or compounds formed between VC1 and metal compounds which lead to the forma tion of stable metal-vinyl compounds. Of these only a few merit consideration in terms of the VC1 detection problem, and they are discussed below: (1) VCl-Organocyanocobaltate (III) Complexes VC1 reportedly reacts with an aqueous solution of K3[CO(CN)5H] at room temperature. * The solution turns yellow with the formation of a 1/1 molar complex between VC1 and the complex hydride. A yellow solid can be recovered from the solution. Supposedly, the reaction proceeds as shown below: [Co(CN)gH] 3" + CHg = CHC1 -------------------J- [ Co(CN)s (CHCICH3 )]3----------- [Co(CN)s(CH3 = CHa) ]3` + HC1 The Kg [CO(CN)sH] solution is made by bubbling Hg through an aqueous solution of K3[Co(CN)s]. (2) VCl-Stannite Ion Reaction VBr is reported to react under alkaline conditions at 0*C with TOOSGOTZ 11 r**o. BFG09303 2- - ,, . 2 hydroxystanmte ions. CH3=CH + Na[Sn(OH)3] --4 [ CHa =CHSn(OH) O] + NaBr+HaO Br I do not know if the vinyl stannoic acid is colored or if VC1 would react the same way as VBr, but I would expect the same reaction. (3) VQ - Hg (OAc), Adducts VC1 reportedly forms a stable adduct with Hg(OAc)a^. I do not know the details of this reaction, but the adduct can be isolated from a strongly ammonia cal mixture of alcohols using thin layer chromatography on silica gel. 1 did find one other interesting report in the literature. It is in the form of a Russian Patent which claims that VC1 reacts with aqueous Ni(OH)3 to form acetaldehyde. ^ Since aldehydes can generate colors by reacting with appropriate organic compounds, the VCl-Ni(OH)a reaction might provide the basis for a VC1 detection system. In summary, the chemical literature only reports a limited chemistry between VC1 and either inorganic or organometallic compounds. Especially as applicable to the development of a~VCl detection system. Although I have provided a few promising leads, they need additional researching in the literature and/or in the laboratory before their true potential would be apparent. William J. 'oenke bak cc: R&D Files (4016 R. J. Fawcett D. E. Ley C. H. Lufter R. G. Parker J. B. Pausch Avon Lake A. L. Schultz M. M. O'Mar a References 1 J. Kwiatek and J. K. Seyler, J. Organometallic Chem. , 3^, 421-32 (1965). ^A Solerio, Gazz, Chim. ital. , 85, 61 (1955). ^D. Braun and G. Vorendohre, Z. Anal. Chem., 199, 37-41 (1963). 4U.S.S.R. Patent, 107, 489, September 25, 1957. Z00S60TZ BFG09304 A > . r- :> f r ' . i i ;i: ^ **jy jr pi - * ' ;4| oc p 1 r ' CEl.LLTAK 1*VC EXTRUSIONS CONTAINING. SIT-rIC iD> SMOKE RETARDANT ADD 11 IVES ANALYSIS OF RATE OF HEAT RELEASE CO.'ZiLSTlON PERFORMANCE C. A. Clark Avon Lake Technical Center 12-20-71 D. L. Alston Cleveland/5401 Summary Impending changes in building codes are expected to establish restrictions on the burning performance of items not covered at present such as 'interior trim and furnishings. Our current expanded or cellular rigid Geon materials burn with evolution of copious smoke. This report covers attempts to reduce the smoke output on burning as seen by the Rate of Heat Release (RHR) combustibility apparatus. Addition of 5.0 phr of Dawsonite or Molybdenum Oxide reduce the smoke output by 43% and 567,, respectively. Conclusions 1. Addition of 5.0 phr of Dawsonite or Molybdenum Oxide reduce the smoke output of Geon 85721 Nat. 020 by 437. and 56%, respectively, when evaluated in the Ohio State RHR combustibility apparatus. 2. At the same levels and conditions as above, these two additives reduce the heat output by 507, and 47%, respectively. 3. Under the conditions of the testing, it appears that tone volatilization of molybdenum chloride or oxychloride may take place when molybdenum oxide is used as a smoke suppressor in Geon 65721 Nat. 020. T099S0T