Document jBbEDKqm153z5JRqxab8Ekp92
AR 226 _ 0763
TOXICITY TO AQUATIC PLANTS
IESTsuBsTANCE
0000
Identity: MreifxetrurreedctoonatasiPniFnOgSp,erFfCl-u9o5ro,oocrtaansesaulcfoomnaptoen,ewnhtiocfhFmCa-y20a3lsCoF-bXe or FC-203CF. (1-Octanesulfonic acid) (CAS # 2795-39-3).
Remarks: The 3M production lot number 203CF. Current information indicates it is a
was 101. mixture of
The 1%
test sample PFOS, 20%
is
FC-
dsioedtihuymleoncetygllyscuollfamtoe,no1b%uttyrlieetthhaenro,l7am0i.n2e%, 2wa%tesru,l2fo.n7a5t%edAcarlkyyllicetfhoearmesrai,ts3,%and
0.05% tolyltriazole.
The following summary applies to a mixture with incompletely characterized concentrations ofimpurities. Data may not accurately reflect toxicityof the fluorochemical component of the test sample.
METHOD:
000
Method: OECD Guideline 201 Type: Acute Static GLP: No YSepeacrisetsu:dySepleernfaosrtmreudm:ca1p9r9i1comutum Source: In-house culture. Originally from the Culture Collection of Algae at tEhleemUneinvterbsaistyiso:f TAelgxaalscaeltlAcuostuinnt,sT(ecxelalss./ml), growth rate Exposure period: 96 hours SctoamtpiusttiecralpMroegtrhaomdso:f SStteaptihsatni,cal19a8n3a.lyses were performed using the
Analytical monitoring: pH, conductivity, and temperature
Test Conditions:
-
Algal Nutrient Medium: Nutrient medium per U.S. EPA, 1978. This nutrient `medium provided all mineral nutrients essential for algal growth and also smeerdvieudmaswatshe8.d0i.luent for all algal operations. The pH of this synthetic algal wSatoscpkraepnadretedsitnsaollgualtimoendpiruemp,araantdioand:deAdpdriirmecatrlyy 1to00t0hemegx/pLossutorcekvseoslsuetliso.n _ Exposure vessels: 250 mL Erlenmeyer flasks containing 100 mL test Asgoliuttaitoinona:ndCconatpipneudouwsi.th inverted glass beakers. Number of replicates: 3.
Initial cell loading: 1.0 x 10 cells/mL.
Number of concentrations: five plus a blank control
@GUT2ZSS
Lighting: Continuous lightingat 44 Ein/sec/m? using cool-white fluorescent lamps. Water Chemistry:
PH range (0 - 96 hours):
8.0 - 10.8 (control exposure)
8.2-8.3 (1000 mg/L exposure)
Test temperature range (0 -- 96 hours:
21.9 -22.3C (incubator)
RESOLTS
0000
Nominal concentrations: Blank control, 62.5, 125, 250, 500, and 1000 mg/L
96-Hr. Algal Growth Response values
Nominal Cell-Count Avg. Specific | % Change from
GEoxnpeo-s{umrge (cells/mL)
Growth rate
Control
45B10,2000000 | o0o.04l0 ||
[[21520s [|feoroo ||_oooomr ||2 __] 95|
[f[ oe5 [ 0 0 || ooom 0 w | >to]
Element values: 96-hour ECs = 143 (130 -- 156) mg/L 96-hour NOEC = 62.5 mg/L.
Element values are based on nominal concentrations.
Reversibility of Growth Inhibition: Not conducted.
Remarks: Testing was conducted on the mixture as described in the Test
Substance Remarks field. The values reported apply to that mixture and not ~~ _ the fluorochemical proportion alone.
Conclusions
The test substance exhibits a 96-hour E,Cso of 143 mg/L with a 95% confidence interval of 130 to 156 mg/L. The 96-hour No Observed Effect
Concentration (NOEC) was 62.5 mg/L.
Submitter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133
DATAQUALTY
001259
tReesltiianbgi.litHyo:weKvieirm,istchhe rsaanmkipnlge =pu2r.itTy hweasstnuodty pmreoeptersltyhcehacrriatcetriearifzoerdquaanlditythe
study in the
lacks analytical solution.
confirmation
of
the
amountof
fluorochemical
proportion
REFERENCES
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