Document 3emo4dOBeop2bdDqZbb43pKwD
ACTIVATED SLUDGE RESPIRATION INHIBITION TEST
TEST SUBSTANCE
Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component ofFC-3041. (1Octanesulfoniaccid)(CAS # 2795-39-3).
Remarks: The 3M productionlotnumber was 2300. The testsample isFC3041 (cc809-1).Currentinformatioinndicatesitisa mixtureof6% PFOS, 36% diethyleneglycolbutylether,36.05% water,12% Sultonefoamer,9% sodium octylsulfate0,.55% sodium laurylsulfatea,nd 0.4% tolymazole.
The followingsummary appliesto a mixture with incompletely characterizedconcentrations of impurities.Data may not accuratelyreflect the toxicityof the fluorochemicalcomponent of the testsample.
METHOD
Method: Acute Toxicityofa Compound toActivatedSludge Mixed Liquor,inhouse method Test type: Staticacute GLP: No Year Completed: 1981 Analyticalmonitoring: Dissolvedoxygen concentration Statisticamlethods: Resultswere determinedby calculationfthechange in dissolvedoxygen concentrationand graphicinterpretation. Test organism source: Mixed liquorfrom the Minneapolis- St.Paul Metro Sewage Plant,St.Paul,MN.
Test condition: Dilutionwater: Deionizedwater Inoculation:Not given. Reference and testsolutionpreparation: A 6000 mg/L primarystock solutionwas preparedby dilutin0g.6g oftestsubstance with 100 mL dilutiownater. Test vessels: Not given Number of concentrations: 1 plusblank. Temperature: Not given. Totalsuspended solidsand pH on day of testing:Not given. Element Basis: Change indissolvedoxygen concentrationcompared to the blank.
RESULTS
Nominal concentrations: Blank controland 1000 nig/L. Element values: No inhibitioonfactivatedsludge respiratiornateat 1000 nig/Lwitha contacttime of-5.5 minutes.
Element valuesbased on nominalconcentration.
Remarks: Testingwas conducted on a mixtureas describedintheTest Substance Remarks field.The valuesreportedapplytothatmixtureand notthe fluorochemicalproportionalone.
CONCLUSIONS
The testmaterialexhibitedno inhibitoreyffectat1000 ffig/oLver -5.5 minute exposure.
Submitter: 3M Company, EnvironmentalLaboratory,P.O. Box 33331, St.Paul, Minnesota,55133
DATA QUALITY
ReliabilitKyJ:imischranking3. The studylacksdescriptioannd recordsofthe method followed.The inoculumisnot properlycharacterizedT.here isno characterizatioonfthe testsubstance puritya,nd thestudylacksanalytical confirmatioonfthe amount offluorochemicaplroportioninthesolution.The testingwas conducted on a mixtureofchemicalshavingvaryingdegrees of biodegradabilitlye,adingtopotentiamlisinterpretatioofnthe results.
REFERENCES
The studieswere conducted by the 3M Company, EnvironmentalLaboratory,Lab Request number 6508S, 1981.
OTHER
Last changed: 6/26/00
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