Document RjK6kaxVaxgK9OopyGVDZkJjB
BOD/COD resultstorFC-99 (DEA saltotPFOS)
BIODEGRADATION
TEST SUBSTANCE
Identity:PerfluorooctanesulfonatDeE,A salt;may alsobe referredto as PFOS DEA salt,FC-99, or 3M Sample No. 2. (1-Octanesulfonic acid,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafcloumoprdo.-, with2,2'-iminobis[ethan(o1l:]1)C.AS # 70225-14-8)
Remarks: Testsample isa mixtureofthe testsubstanceinwater (approximately25% testsubstance and 75% water).Allvaluesreported relatetothismixture.No calculationwsere made to adjustforthe actual concentrationofthe testsubstance inthetestsample.
METHOD
Method: Not noted. Type: Aerobic GLP: No Year completed: 1979 Contact time:20 days lnnoculum: Sludge collectefdrom an aerationbasinatthe municipal
waste treatmentplantinSt.Paul,Minnesota.
RESULTS
5-day BOD: 20-day BOD: COD:
44,000 mg/kg 82,000 mg/kg 78,200 mg/kg
Remarks: This materialhas a perfluorinatemdoietyand a nonfluorinatemdoiety. Currentknowledge ofthese chemistriessuggests that allbiodegradationindicatedinthisstudy islikeldyue to reductionofthe non-fluodnatedmoiety,2,2'-iminobis[ethanol].
Testingwas conducted on the "as-sold"mixtureofthe subjectmaterialin water (-24.5% subjectmaterial)T.he values reportedapplytothat mixtureand notdirectltyothe subjectmaterial.
CONCLUSIONS
This testingindicatedthatthe 2,2'-iminobis[ethanmooli]ety islikeltyo be biodegraded inaerobicenvironments capable ofsupporting biodegradation.This study cannot ruleout the possibilithyatconditions could be found thatwould allowforbiodegradationofthefluorochemical
moietyn,orcoulidtexcludethepossibiltihtayta microorganiscmould eventuallybe enrichedthatcould metabolicallaylterthischemical.
Submifter: 3M Company, EnvironmentalLaboratory,P.O. Box 333.31, St.Paul,Minnesota,55133
DATA QUALITY
Reliability:Klimischranking3. This study lackssufficient documentation,characterizatioonfthe testsubstance puritya,nd analyticamleasurement oftestconcentrations.
REFERENCES
This study was conducted by the 3M Company, Environmental Laboratory,Lab Request number 48955, 6/8/79.
OTHER
Last changed: 5/2/00
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