Document evNyYGGgm17NExwYb7zVNweBp

Aft - 0706 ACUTE TO XIC ITY TO FISH TEST SUBSTANCE_______________________________________________ Identity: Mixture containing perfluorooctanesulfonate which may also be referred to as PFOS, FC-95, or as a component of FC-201F. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Rem arks: The 3M production lot number was not noted. The test sample is FC-201F. Current information indicates that FC-201F is a mixture of 3.0% PFOS, 36.0% diethylene glycol butyl ether, 36.6% water, 8.25% acrylic foamer, 7.0% sodium octyl sulfate, 6.0% sulfonated alkyl ether sodium salts, 3.0% triethanolamine, and 0.15% tolyl triazole. The following summary applies to a mixture with incompletely characterized concentration o f impurities. Data may not accurately reflect the toxicity o f the fluorochemical component o f the test sample. METHOD:________________________________________________________ Method: DIN 38412, part 20 (fish test) Test type: Acute static GLP: No Year Com pleted: 1993 Species: Leuciscus idus Supplier: Not noted. A nalytical m onitoring: Not noted. Exposure period: 48-hours Statistical m ethods: Not noted. T est fish age: Not noted. Length and weight: Length = 5 - 7 cm W eight = Not noted Loading: Not noted. Pretreatm ent: Not noted. Test conditions: Dilution w ater: Not noted. Dilution w ater chem istry: Not noted. Lighting: Not noted. Stock and test solution preparation: Not noted. Concentrations dosing rate: Not noted. S tability o f the te st chem ical solution: Not noted. Exposure vessels: Not noted. Num ber o f replicates: Not noted. Num ber o f fish per replicate: Not noted. 000371 Num ber o f concentrations: Not noted. W ater chem istry during the study: W ater was aerated and temperature was kept at 20 + 1C RESULTS_______________________________________________________ Nom inal concentrations: Not noted. Elem ent value: 48-hour NOEC = 500 ppm Element values based on nominal concentrations. Rem arks: Testing was conducted on the mixture as described in the Test Substance Remarks field. The value reported applies to that mixture and not the fluorochemical proportion alone. The NOEC was calculated based on the report statement "As a result of the test it has to be stressed that only a 20 fold diluted testing liquid (1% solution) shows no more negative effects on the animals." A 1% solution diluted 20 times would calculate to be 500 ppm. Report is in German; English summary provided C O N C L U S IO N S __________________________________________________ The FC-201F 48-hour No Observed Effects Concentration (NOEC) was 500 ppm. Subm itter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133 DATA QUALITY_______________________________________ __________ R eliability: Klimisch ranking 4. Testing lacks documentation of methodology used. Sample purity was not properly characterized and the study lacks analytical confirmation of the amount of fluorochemical proportion in the solution. R E F E R E N C E S ___________________________________________________ The fish study was conducted by the Hygiene Institute for the Ruhr District, Gelsenkirchen, Germany, 1993. OTHER___________________________________ ________________ Last changed: 6/26/00 EXAMINATION AND ASSESSMENT OF SEWAGE BEHAVIOUR YOUR LETTER ETC. BEST COPY AVAILABLE Within the framework of the a/m. order the product lig h t W ater FC-201 F (manufactured by your company) was tested with regard to Its biological degradability and its reaction towards higher and lower trophic levelled aquatic organisms. The mentioned product is a liquid which is miscible with water in every ratio. It shall be used as a fire extinguishing agent in a concentration range from 1 to 1.5% . \ The analytical work was carried out corresponding to the sp e cifie d DIN-standards resp. to the instructions which are set down in the German Standard Procedure for Water, W aste W ater and Sludge Examination. The results are described as befow by outlining each examination procedure applied. 1. BIOCHEMICAL DEGRADATION The biochemical degradation rate of the product Light Water FC-201 F (1% aqueous solution) was determined via the biochemical oxygen demand. This procedure does not only show the extent of the microbiological oxidative degradation of the organic compounds but allows statements about the degradation kinetics because of the corresponding graph (ait.: curve) progression. The chemical oxygen demand was used as calculating quantity with regard to the degradation rate, it was determined experimentally via the potassium dichromate method which can be used as a measure for the complete mineralisation of the product's organical substance (COD=11000 mg O j/I). If you use this value as the required oxygen quantity for a 100 % degradation, the biochemical degradation, expressed as BODs (250 mg O ^I), amounts to 56,8 %. As you can see from the attached graph on the biochemical degradation kinetics determined manometrically the biochemical oxidation is finished already halfways after four days. The final point of the microbiological degradation of the chemically oxidizable contents is reached -under the chosen test conditions- after 24 days and amounts to 75%. The available data indicate that you can classify the product Light W ater FC-201 F as easily degradable. 2. REACTIONTOWARDS LOWEB AQUAT1C_QHQANISMS ATTC-test with a 1% ready to use solution was carried out to generate a statement (coming dose to practice) about a possible toxicity of the product Light W ater FC-201 F. 7 The method is based on the reduction of 2.3,5-triphenyitetrazolium chloride to red formazan by the dehydrogenases of the living ceils (activated sludge), depending quantitatively on the active ceils. By registrating the amount of produced formazan you can conclude immediately on the toxicity of a substance brought into a defined suspension of activated sludge and TTC, if you compare the results to a blank test. The semi-logarithmic graph makes clear that the formation of formazan, expressed in absolute values, is at first higher than the blank value The further progression of the graph shows a decreasing formation of formazan with an increasing ratio of 1% Light Water FC-201 F-solutlon. The blank value is reached at a concentration of 1 ml per 10 mi total solution. An amount of 8 ml product solution leads to an approximate inactivation of the living cells; the activity of the dehydrogenase comes almost to an end. 000373 'S*****- ? BgACnCN TOWARnS HlflHERAQUATTC ORGANISMS i The examination o f the product Light W ater FC-201 F wfth respect to Its fish toxicfty was carried out according to the method descrbed in DIN 38412, part 20 (fish test) in a 1% utility-solution (a lt: ready to use 7). A test solution made up of the product and Button w ater has been stocked wfth Laudscus ktusin a size range from 5 to 7 cm. The behaviour of the animals has been watched fo r 48 hours. During the test the temperature of the aerated test water was kept at 20 1 *C. As a result of the test ft has to be stressed that oniy a 20 fold diluted testing liquid (1% solution) shows no more negative effects on the animals. -jl IA-- ... ?A...- .. S '* - f f * C* * C * J ^ '* ' > The product Light W ater FC-201 F is an organicafly polluted liquid which is easily accessfcie to biological degradation. The result of the TTC-test shows that draining the product through sewers into a waste water purifying plant has no negative effects on the bfologicai part of a sewage plant. Nevertheless ahas to be ensured that the 1% quenching Squid is diluted wfth water, e g . domestic waste water, h a ratio o f at least 1:10. i .occ W ater which contains the product lig h t W ater FC-201 F should not be drawn off into a drainage ditch. In this case the high organical pollution and the toxicity to fiS irwould lead to a negative effect on the water composition. Signature b e s t c o p y a v a il a b l e i l 000374 H ygiene-Institut des Ruhrgebiets, Gelsenkirchen InstitutKt Umwstthygiene und Umweltmedizin Orektor Prof. Or. med. Martin Exner BEST COPY AVAILABLE ...... . . iw wninji-n--cttoia4S-<si?Q-- uw ;: 3 .M D eutschland GmbH : iC a rl-S c h u rz -S tr. 1 41453 Neuss l fGeisenkirchen Rohausar Strae 19 45879 Gelsenkirchen Telefon (0209) 1586-0 Telefon Durchwahl (0209) 1586- 174/247 Telefax (0209) 1586- 251 45879 Gelsenkirchen. 13. September 199 Dir.Tgb.-Nr. A 3469 E/93/C , Sachbearbeiter. T o lksd o it./ Wei ) B etr.: A bw asse rte chn isch e Prfung und B eurteilung h ie r: P rodukt L ig h t W a te r FC-201 F Bezug: Ih r S chreiben vom 2 9 .0 3 .1 9 9 3 , Z .: NM CP/RV-TH Im Rahmen der v .g . A u ftra g se rte ilu n g w u rd e das von Ihrer Firma h e rg e ste llte P rodukt L ig h t W a te r FC-201 F h in s ic h tlic h der biolog isch e n A bbaubarkeit und des V erha lte ns gegenber hheren und niederen W asserorganism en u n te rsu ch t. Bei dem angesprochenen P rodukt h an d elt es sich um eine m it W asser in jedem V e rh ltn is m ischbare F l ssig keit, die als F euerlschm ittel in einer K on ze ntra tio n von 1 % bis 1,5 % e in g e se tzt w erden so ll. Die analytisch e n A rb e ite n w u rd en entsprechend den stan d ardisierten D IN-N orm en b zw . den in den D eutschen E inheitsverfahren z u r W asser-, A bw asse r- und S chiam m unter- suchung niedergelegten V o rs c h rifte n d u rc h g e f h rt. Die U ntersuchungsergebnisse w erden t nachfolgend u n te r ku rze r S kizzierung des je w e ils angew andten U ntersuchungsverfahrens f . . und d er g ew h lte n T estbedingungen beschrieben. V',:' i *- ' * * %* Die biologische A bbaurate des P roduktes L ig h t W ater FC-201 F (1 % ig) w u rd e ber d e n _ :biochem ischen S a u e rsto ffb e d a rf a u f m anom etrischem W ege e rm itte lt. Letztg en a nn te V er fah re n sw e ise s te llt n ic h t nur ein M a f r den o xid a tive n Abbau d e r organischen tnh a lts* S toffe a u f m ikrobiologischem W ege dar, sondern l t aufgrund des entsprechenden K urvenverlaufes auch A ussagen ber die K in e tik des Abbaues zu. Trger des Hygiene-Instituts: Verein zur Bekmpfung der Volkskranwietien im Huhrkohlengeiet eY,, Gelsenkirchen 000375 lin e rto V o in ^ je O i ii \ \ . \\ FIRE-HYGIENIC EXAMINATION (Brandhygienische PrirfunfiEST COPY AVAILABLE I-' Ii > r In your a.m. letter you invited us to do the fire hygienic examinations and assessment of the extinguishing agent called Light Water FC-201 F, which is manufactured by your company. 0-i: Th test report is intended to be presented to the registration office for extinguishing agents; it is no assessment by means o f fire engineering The product to be tested Is a fire extinguishing agent based fc ; on surfactants and alcohols; it shall be used as a foam. v :! i: < T est re su lts ... .~:v* . ' a> COMP**nBIUTYOPTHE gXnNGUISHlNQ agent solutions with skin and eyes ; :' . To detect possible irritant effects of the extinguishing agent Light W ater FC- 201 F on skin and eyes, white rabbits were used for experiments. Diluted solutions of the product in concentrations of 1 and 10 weight percentage were applied to the sensitive inner skin of the ear and underneath one eyeSd of the animals. The results o f the experiments showed that no irritant effects could be detected on the skin treated with a/m solutions. Therefore, you can assume that skin irritations can be widely excluded during the use of the extinguishing agent The pH-vaiues of the solutions are of a magnitude of 8.1 to 8.4; in this range skin usually tolerates the solution without irritations. The examination of irritant effects regarding the eyes showed that only the 10% solution caused minor reddening of the eye's mucous membrane on the first experimental day; the irritation ended the following day. The 1% test solution didn't cause any irritations. ____ b l COMPATietUTY OP THE FOAMED EXTINGUISHING AGENT , (* .T h e effect of the foam of the extinguishing agent Light Water FC-201 F on skin was tested with a heavy (?) foam. This foam was produced by means of a 1% solution and with the help of a modified j v " wet extinguisher. In the experiment guinea pigs (with the exception of their heads) were exposed to the foam for 10 minutes. Afterwards the foam was removed manually and the skin of the animals dried with warm air. These tests with the extinguishing agent Light W ater FC-201-F showed no negative - effects on the animals. Apart from this resuit it has to be pointed out that inhalation of this kind of foam - . may lead to suffocation; It shouldn't be sprayed at people directly. j ' .1. J-' ' -' ' : - c) W ith regard to possible toxic effects of the fire extinguishing agent Light W ater FC-201 F on mpmmais toxicological tests were carried out for orientation with a collective of 15 white mice. The animals were kept on dried food and received a 1% solution of the mentioned extinguishing agent as the only lin k in g possibility. During the experimental time of 14 days and the subsequent observation interval of two weeks, no damages were detected in comparison to a group of control animals. : SUMMARY ' r On the basis o f the known test results and the data given to us, there are no reservations against the ... planned use of the extinguishing agent Light Water FC-201 F from a fire hygienic point of view. 000376 HYGtENE-INSTnirr OES RUHRGEBIETS, GELSENKIRCHEN Institut fr Umwsltftygien und Umweltmedizin B latt 2 BEST COPY AVAILABLE A ls Berechnungsgre im H in b lic k a u f die A bb a urate d ie nte d e r nach d er K alium dichrom atm ethode e xpe rim en te i! fe s tg e s te llte chem ische S a u e rs to ffb e d a rf (C S8 * 11 0 0 0 m g 0 2/l), der a ls M a f r die vo lls t n d ig e M in e ra lisa tio n der org an isch en S ubstanz des Produktes herangezogen w e rd en kann. Z ie h t m an diesen W e rt a ls die f r den 100 % igen Abbau e rfo rd e rlic h e S a u e rstoffm e n ge heran, so b e tr g t d e r b io che m isch e A b-, bau, ausgedrckt als BS8 S { 6 2 5 0 m g 0 2/l) 5 6 ,8 % . W ie d er als A nlag e b e ig e fu g te n gra- i fisch e n D arstellung be r die a u f m anom etrischem W ege e rm itte lte b io ch e m isch e A bbak in e tik entnom m en w e rd e n kann, is t die biochem ische O xid a tio n n ach einem Z e itra u m *. von 4 Tagen bereits zu r H lfte abgeschlossen. Der E ndpunkt des m ikro b io lo g isch e n A b baues der chem isch oxid ierba re n In h a lts s to ffe is t u n te r den g e w h lte n V ersuch sb e dingungen nach e tw a 2 4 Tagen e rre ic h t und b e tr g t 7 5 % . A u fg ru n d der vo rlie g en d en D aten kann das P ro du kt L ig h t W a te r FC-201 F (1 % ig) als b io lo g is c h g u t abbaubar einge s tu ft w erden. 2 . V erhalten gegenber niederen W asseroroanism en Um praxisnahe Aussagen ber eine g g fl. vorlie g en d e T o x iz it t des zu u ntersuchenden Produktes L ig h t W a te r FC-201 F gegenber niederen W asserorganism en m achen zu knnen, w urde ein T T C -T est m it einer 1 % ig en G ebrauchslsung d u rc h g e f h rt. Das V er fahren beruht darau f, da die D ehydrogenasen der lebenden Z elle n (B elebtschlam m ) 2 ,3 ,5 -T rip h e n ylte tra zo liu m ch lo rid (TTC) zu ro te m Form azan in q u a n tita tiv e r A b h n g ig k e it zu den je w e ils a ktive n Z elle n reduzieren. A u f diese W eise l t sic h d urch die m engen m ige Erfassung des g eb ild e ten Form azans eine u n m itte lb a re A ussage ber d ie T o x iz it t eines S to ffe s , den m an in eine d e fin ie rte B elebtschiam m /T T C -S uspension e in b rin g t, m achen, w enn man die Ergebnisse m it denen einer P arailelprobe v e rg le ic h t, die diesen S to ff n ic h t e nth lt. W ie die se m ilogarithm ische g ra fisch e A b b ild u n g v e rd e u tlic h t, lie g t die Form azanbiidung, in absoluten W erten a u sg e d r ckt, zu n ch st b e r dem B lin d w e rt. D er w e ite re V e rla u f der Kurve belegt dann, da m it zunehm enden A n te ile n an 1 % ig e r L ig h t-W a te r F C -10 2 F- T Lsung eine Abnahm e d er Form azanbiidung, die bei einer K o n z e n tra tio n vo n c a . 1 .0 m l / 10 m l G esam tlsung den B lin d w e rt e rre ic h t, e in tritt. M en ge n an teile vo n 8 m l an Pro- duktisung fhren s ch lie lich zur annhernden In a k tiv it t d e r lebenden Z ellen und zum w e itre ich en d en Erlschen der D e h yd ro g e n a se n a ktivit t. 000377 Trger des Hygiene-Instituts: Verein zur Bekmpfung der Volkskrankneiten im RuftrkonJengetiiei e .V .. Getsenkircnen -3 - < " tir .; HYGIENE-INSTITUT DES RUHRGEBIETS, GELSENKIRCHEN inriptf Br Urnwettftygien und UmwaHmedlan --v .B l^tt 3 % b e s t c o p y a v a il a b l e 3 . V erha lte n gegenber hheren W asscrorqanfsm en Die berprfung d es P ro du ktes lig h t W a te r FC-201 F h in s ic h tlic h fis c h to x is c h e r E gen* r . sch fte n e rfo lg te m it H iife des in der DIN 3 8 4 1 2 , T e il 2 0 beschriebenen V e rfa h re n s (F ischtest) an einer 1 % ig e n G ebrauchslsung. Danach w u rd en 5 cm bis 7 cm lange G oldorfen (L euciscus id u s) in die aus v .g . P ro d u kt und V erdnnungsw asser h e rg e ste llta n T estlsungen e in g e s e tz t und das V e rh a lte n d e r Tiere 4 8 S tunden lang b e o b a ch te t. ! W hrend der V e rsu ch sd a u e r w u rd e die T e m p e ra tu r des b e l fte te n T e stw a sse rs a u f * 2 0 C 1 C g e h a lte n . A ls T e stergebnis is t im vorliegenden Fall fe s tz u h a lte n , da e rs t bei einer 2 0 -fa ch e n V erd n nu n g d er 1 % igen T e s tfl s s ig k e it keine n a ch te ilig e n A u s W irkungen a u f die e in g e se tzte n T ie re m ehr zu erkennen w a re n. 4 . Zusam m enfassung Das P rodukt L ig h t W a te r FC-201 F s te llt eine organisch belastete F l ssig keit d a r, die dem biologischen A bbau g u t zugnglich is t. Im H in b lick a u f die A b le itu n g des P roduktes ber die K analisation in A bw asse rre in ig u ng s anlagen is t aufg ru nd d e r Ergebnisse des TTC -V ersuches fe stzu ste lle n , da dann keine n ach teilig en A u s w irk u n g e n a u f den b io lo g isch arbeitenden T e il eines K l rw e rke s zu er w a rte n sin d , w e n n s iC h e rg e ste iit is t, da die 1 % ige L sch fl ssig ke it m it anderen W ssern, z.B . h u slich e n A bw sse rn m in d este n s im V e rh ltn is 1 :1 0 v e rd n n t w ird . . In V o rflu te r s o llte n W sse r, die das P ro du kt L ig h t W a te r FC-201 F e n th a lte n , n ic h t ab g e le ite t w e rd e n , da s ie a ufg ru nd der hohen organischen B elastung so w ie d e r F isch to xizi t t zur n a ch te ilig e n V ernderung der W a sse rb e sch a ffe n h e it fhren w rd e n . vassst Landesfeuerwehrschul N RW Am tL Prfstelle fr Feuerlschmittel u. -gerate T e lg te Anlagen Der D ire kto r des In s titu ts r.A . 101.4 Trger aes Hygiene-Instituts: Verein zur Bekmpfung der Vofcskrenkhenen kn Runrkomengeoiet e .V .. Geisenkirenen BEST COPY AVAILABLE .V* r . . . 4 . %*/.* I* llygiene-tnslilul des Butugeblets zuGetsenkirctim 4 .. (Ti rv.* b ' Toxizittsbestimmunn mit 2,3,5-Triphenyltetrazoliumchlorid(TTC) Firma; 3H Deutschland GmbH, Neuss Produkt: Light Water FC-201 F (l%ig) BEST COPY AVAILABLE M mm* H yg ien e-In stitu t des Ruhrgebiets, Gelsenkirchen Institut fOrUmweltnygiene und Umweitmedtzin Direkux: Pro. Or. med. Martin Exnar ll,gmn WiaulEoacnI01245-4M1ZJ K I C O P Y A V A I L A B t L wSwfl. , 9 i,. 3 M D eutsch la n d G m bH .C ari-S churz-S tr. 1 41453 Neuss 45879 Gelsenkirchen Telefon (0209) 1586-0 Telefon Durchwahl (0209) 1586- 174/247 Telefax (0209) 1586- 251 45879 Gelsenkirchen, 13. September 199 D ir.Tflb.-N r. A 3471 E/93/C Sachbearbeiter. ToIksdorfjF/ Wei B etr.; L s c h m itte l L ig h t W a ter FC-201 F h ie r B randhygienische Prfung und B eurteilung Bezug; Ih r S chreiben vom 2 9 .0 3 .1 9 9 3 , Z .: NM CP/RV-TH Im Rahm en des v .g . S chreibens b ea u ftrag ten Sie uns m it der b ra nd h ygienischen P rfung und B eu rte ilu n g des vo n Ihnen herge stellten LS sch m itte is m it der B ezeichnung L ig h t W ater FC-201 F. Der h ie r zu e rs te lle n d e P r fb e rich t is t nur zur V orlage bei den Z u la ssun g sste lle n f r F e u e ri sch m itte l b e s tim m t und s te llt keine B eurteilung in b ra nd tech n isch er H in s ic h t d ar. Bei dem z u r b e rprfu n g anstehenden P ro du kt h an d elt es sich um e in a u f d er B asis v o n Tensiden und A lko h o le n aufgebautes F e u e ri sch m itte l, das als S chaum zum E n s a tz kom m en s o ll. U!SSS!i&iSfflSSSSSk!^S3S a. H a u t- u nd A u o e n ve rtr g lich ke rt von L sch m itte ll su n ftcn ------ -- Z u r E rm ittlu n g d e r m glichen R eizw irkung des L sch m itte ls L ig h t W a te r FC -201 F gegenber der H a u t und den Augen sind w eie K aninchen zu V e rsu ch szw e cke n herangezogen w o rd e n . Im vorliegenden Fall w u rd en ve rdnnte Lsungen des P roduk te s m it K o n ze n tra tio n e n von 1 G ew .% und 10 G ew .% a u f die a ls e m p fin d lic h be ka nn te O h rin he n ha u t und u n te r ein A ug e nlid der T ie re a p p liz ie rt. T0 0 0 3 8 1 Trger des Hygiene-Jnsntuts: Verein zur Bekmpfung der Volkskrankneiien im Rulvkohienge&iei e.V,, Getsenkireften -2 - HYGIENE'INSTITUT D ES RUHRG E3IETS, GELSENK1RCHEN Institut fr Umwetthygiene und Umweitmedizin BEST COPY AVAILABLE B latt 2 . A ls Ergebnis der d urchg e f h rten V ersuche is t fe s tz u s te lle n , da bei den m it v .g . Lsungen behandelten H autpartien keine R eizerscheinungen zu b eobachten w a re n " und s o m it davon ausgegangen w erden ka nn , da beim E n sa tz des L s c h m itte ls Irri- 2 ta tio n e n der H aut w e itg eh e nd auszuschlieen sind. Die pH -W erte d e r Lsungen, be w e g en sich in einer G renordnung vo n 8,1 bis 8 ,4 und s o m it in einem B ereich, der vo n d er H aut b liche rw eise noch re izlo s to le rie rt w ird . jj ) v Die berprfung der R eizw irkung im H in b lick a u f die A ugen ergab, da n u r die * 10 % ige T estlsu n g am ersten V ersuch stag eine le ic h te R tung d e r A u g e n sch le im hute h e rv o rrie f; die v .g . Irrita tio n klang je d o ch nach einem Tag ab. Die 1 % ige T e stlsu n g l ste keine R eizerscheinungen aus. b . V e rtr g lic h k e it des verschum ten L sch m itte ls Die R eizw irkung des verschum ten L sch m itte ls L ig h t W a te r FC-201 F a u f die H aut is t anhand eines S chw erschaum es u n te rs u c h t w o rd e n , der aus einer 1 % igen V e r dnnung m it H ilfe eines m o d ifizie rte n N alschers erzeugt w u rd e . Im V ersuch w u rd en M eerschw einchen m it A usnahm e des K opfes 10 M in u ten lang v .g . S chaum ausg e setzt. Danach w urde der Schaum m anuell e n tfe rn t und das Fell der T ie re in einem W a rm lu ftstro m g e tro ckn e t. N ach dem Ende d er V ersuche w a re n bei den ein g esetzten T ieren keine n achteiligen A u sw irku n g e n des zu untersuchenden Lsch schaum es L ig h t W a te r FC-201 F fe s ts te llb a r. U nabhngig hiervon is t an dieser S telle je d o ch d arau f h in zu w e ise n , da die In h a la tio n vo n Schum en dieser A rt zum E rsticken f h re n kann, und da M enschen n ic h t d ire k t angesprht w erden so llte n . c . Im H in b lick a u f die s u g e tie rto xiko lo g isch e W irkun g sw e ise des F e u e ri sch m itte ls L ig h t W a te r FC-201 F sind o rie ntie re n de , to xiko lo g isch e U ntersuchungen an einem K o lle k tiv von 15 w eien M usen d u rc h g e f h rt w o rd e n . Die T ie re w u rd e n bei T ro c k e n fu tte r gehalten und erhielten a ls a usschlie liche T rin k m g lic h k e it eine 1 % ige Lsung des genannten L s c h m itte ls . A ls Ergebnis dieses V ersuches is t fe stzu h a lte n , da w hrend der 14 -t g ig e n V ersuch sze it so w ie im N achbeobachtungszeitraum von zw e i W o ch en gegenber einer G ruppe vo n K o n tro iltie re n keine S chdigungen fe s ts te llb a r w aren. Trger aas Hygiene-Instituts: Verein zur Bekmpfung per Volkskrankheiten an RunrkohlengeOiet e.V.. Getsenkirchen 000382 HYGIENE-INSTITUT O ES R U H RG EBIETS. G ELBEN K IR C H EN lnstiM tor Umwetthygleoe und Umwellmedtih B latt 3 Zusam m enfassung BEST COPY AVAILABLE A u fg ru n d der vo rlie g e n d e n U ntersuch u ng se rg eb n isse und d e r uns zur R ezeptur ber lassenen D aten b e ste he n gegen die g e p la n te V erw e nd u ng des L sch m itte ls L ig h t W a te r FC-201 F aus b ra n d h yg ie n isch e r S ic h t keine B edenken. t. Der D ire k to r des In s titu ts LA Verteiler Landesfeuerwehrsch ule N RW A n rtL P rtH ste B e f r Feuertflschm teel u . -gerate T e lg te 000383 * t Trnm r rimm Hwnin*Jnatftuts: Verein zurBekSmofuna der VoOakrankfteiten n Rutvtcahlengeoiet e.V;. Gelsenkircnen