Document 99RNGEQLd1pgxnOaYeooa2887

EFFECT OF DEGRADATION ON FOAMING TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-203A or FC203 NFP. (1-Octanesulfoniacid)(CAS # 2795-39-3). Remarks: The 3M productionlotnumber was notnoted.The testsample isFC-203A. Currentinformationindicatesitisa mixtureof 1.34% test substance,25% diethyleneglycolbutylether,67.85% water,2.66% Sultone foamer,3% sodium octylsulfate0,.1% sodium laurylsulfatea,nd 0.05% tolyltriazole. The followingsummary applies to a mixture with incompletely characterized concentrations of impurities.Data may not accurately reftct the effectsof the tluorochemical component of the testsample on foaming. METHOD Method: Experiment inconjunctionwithModifiedOECD Screening Test, OECD 301 E GLP: No Year Completed: 1980 Analyticalmonitoring: Foam heightvs.time Statisticamlethods: Resultswere determinedby calculatioonfthefoam heightaftershaking. Test organism source: A 50:50 mix ofsoilextractand secondary effluent was used inthe biodegradationtest.The secondary effluenwtas Pigs Eye mixed liquorw,hilethe soilwas from E.A. Reinees garden. Test condition: Dilutionwater: Nutrientsolution Reference and testsolutionpreparation: OECD testculture collectedfrom the end ofthe 28-day ModifiedOECD screeningtest. Samples dilutedwithnutrientsolutiontosame concentrationsas used inbeginningof28-day ModifiedOECD screeningtest.Vialscapped and shaken vigorouslyby hand for30 seconds. Test vessels: #4 glassvials(4-1/2in.). Number of concentrations: Sample from the 28-day biodegradation test,freshlyprepared solutionsofidenticacloncentrationa,nd blank. Temperature: Not given. Total suspended solids and pH on day of testing: Not given. Element Basis: Measured foam height RESULTS NominalconcentrationsB:lank,freshly-prepasroeldutiosno,lutiofnrom28 day test.Test materialconcentrationofeach at- 280 rrig/L. Element values: Foam height(30 sec.)= 15 mm (freshsolution) Foam height(30sec.)= 5 mm (solutiofnrom biodeg.test) Foam height(30sec.)= 10 mm (blank) Remarks: Testingwas conducted on the mixtureas describedintheTest Substance Remarks field.The values reportedapplytothatmixtureand not the fluorochemicalproportionalone. CONCLUSIONS Microbialmetabolicactivitryeduces the abilitoyfthetestsubstance tofoam. Submitter: 3M Company, EnvironmentalLaboratory,P.O. Box 33331, St. Paul,Minnesota,55133 DATA QUALITY ReliabilitKyJ:imischranking= 3. Study lacksdescriptioannd recordsofthe method followed.The sample puritywas not properiycharacterizedand the study lacksanalyticaclonfirmationofthe amount offluorochemicalproportion inthe solution. REFERENCES The studieswere conducted by the 3M Company, EnvironmentalLaboratory, St.Paul,MN, Lab Request number 5541S, 1980. OTHER Last changed: 6/28/00 InternCaolrrespondence cc: D. L. Bacon/R. L. Bohon - 21-2W (58) D. R. Ricker - 53-4N To:J. A. PIGNATO - C014MERCIALCHEMICALS DIVISION - 236-2A From:E. A. REINER - ENVIRONMENTAL LABORATORY (EE&PC) - 21-BW (63) SubjectE-F.FECT OF BIODEGRADATION ON FOAMING OF "LIGHT WATER" PRDDLIC-=Date:AUGUST 6, 1980 In conjunction with the OECD Modified Biodegradation Screening Test on@FC-..;203F,C-206, and FC-3017, a side study was done that provided data on the effect of biodegradation on the foaming of "LIGHT WATER" products. After 28 days of incubation, 25 ml of each OECD test culture was poured into separate #4 (4 1/211)glass vials. The vials were capped, shaken vigorously by hand for 30 seconds, and the foam height measured. Table 1 compares the results of these 28 day old cultures with those of freshly prepared "LIGHT WATER" solutions of identical concentration. Also compared in this table are 28 day old "LIGHT WATER" solutions kept sterile with 400 mg/l HgCl2- Table 1 - Foam Height After 30 Seconds of Vigo rous Shaking 280 mg/ FC-203/@@ 425 mg/l FC-206 210 mg/l FC-3017 Fresh Solution 15 mm 20 mm 12 mm After 28 Days Biodegradation 5 mm 7 mm 2 mm HgCl2 Stabilized For 28 Days 10 mm 15 mm 10 mm These results clearly demonstrate that microbial metabolic activity reduces the ability of "LIGHT'WATER" products to foam. These data may prove useful in responding to futurecustomer inquires about the treatability of these products. Please call me on 778-5079 if you have any questions concerning this.information. EAR/cel FORM I Got*-$-FWO SAMP LE DESCRIPTION ENVIRONMENTAL F- File-P&pNo. ENGR. LAS - WORK SHEET Date: Analyst: /if Hrs.: 4 Tc fit- 44-o 2 AA v qp4' 0 v i^,n24 44&si i-A -4 V4@ Li @a.ZA, 10 qA 10 A A AJ-ZLO--, 4-A-@ t (pqiewed by: rp uxria tft. acca scitFCmlk4-mcr) U. all Ici ((IlAl 11 11.1 1 I I I I-A- 1H I- M.---rAll I I I I 1111 1r ilimilim! i tV -to.LOW IJFIV)t>ilo CP