Document Yrd7nDkLnv3OegzY6anvy5LdE
AR 226 _ 0292
ACUTE TOXICITY TO FISH (FATHEAD MINNOW)
TEST SUBSTANCE
Identity: A mixture containing perfiuorooctanesulfonate, which may also be
. referred to as PFOS, FC-95, or as a component of FC-3017. (1Octanesulfonic acid) (CAS # 2795-39-3).
Remarks: The 3M production lot number was not noted. The test sample
is FC-3017. Current information indicates FC-3017 is a mixture of 0.67%
PFOS,
1.33%
20% diethylene
Hydroxy foamer,
glycol butyl
1% sodium
ether,
octyl
55.41% water,
sulfate, 0.5% p
21% ethylene
olyoxyethylene.
gl
yc
ol
,
monooctylphenyl ether, 0.04% sodium lauryl sulfate, and 0.05% tolyltraizole.
The following summary applies to a mixture with incompletely
characterized concentrationsof impurities. Data `may not accurately reflect toxicity of the fluorochemical componenoft the test sample.
METHOD:
Method: OECD Guideline 203
Type: Acute static-renewal
GLP: No
Year completed: 1995
Species: Pimephales promelas
Supplier: Aquatic Biosystems, Inc., Fort Collins, CO.
Analytical monitoring: Temperature, pH, and DO.
Exposure period: 96-hours
Statistical methods: Not given.
Test fish age: Juveniles (121 -- 132 days)
Length and weight: Average length = 23 mm
Loading: 0.504 g/L.
Average weight = 0.0908 g (wet)
Pretreatment: None
Test conditions:
Dilution water: Carbon-filtered well water
Dilution water chemistry:
Dissolved Oxygen:
8.4 mg/L
pH: 84
Lighting: Not given.
.
Stock and test solution preparation: The test material was addeddirectly
to the dilution water on a weight/volume basis and mixed well with a glass.
rod.
-
Concentrations dosing rate: Once for the control, 1.0 and 10 mg/L
exposures. Twice
mg/L exposure.
for
the
100
mg/L
exposure,
and
three
times
for
the
1000
Stabilityofthe test chemical solutions: Not noted.
Exposure vessels: 2.0 L beakers containing 1.8Ltest solution.
002799
1N0u0m0bemgr/oLferxeppolsiucarteesw:er1efdourpl1i,c1a0t,e.and 100 mg/L exposures, control and NNuummbbeerroofffciosnhcepnetrrraetpiloincsa:te:fou10r.plus a blank control Water chemistry during the study:
PH ran8g.e0(80-.946 (hcoounrtsro)l: exposure) Temper7a.t7u-r8e.4ra(n1g0e00(0m-g9/6Lhoeuxrpso)s:ure1)7.8
Dissolved oxygen range (0-96 hours):
6.58.4 mg/L (control exposure)
19.9C
0.7 -- 8.4 mg/L (1000 mg/L exposure)
RESULTS
Nominal concentrations: Blank control, 1, 10, 100, and 1000 mg/L.
Element values: 96-hour LCs = >1000 mg/L
Element values based on nominal concentrations
Remarks: Testing was conducted on the mixture as described in the Test tShuebsftluaonrcoechReemmicaarlkpsrfoipeoldr.tiTonhealvoanle.ues reported apply to that mixture and not
CONCLUSIONS
The test sample 96-hour LCs for fathead minnow was determined to be t>h1i0s0c0onmcegn/tLr,attihoen.highest concentration tested. No mortality was observed at PSauublm,itMtienrn:esot3aM, C5o5m1p3a3ny, Environmental Laboratory, P.O. Box 33331, St. DATA QUALITY eRexlpioasbiulrietyc:onKcieinmtirsacthiornasn,kwiintgh=a3.comTbeisntaitngioanpopfrsotaatcihcianncodnssitsatteinct-raemneownagl ltaecckhsniaqnauleystiucsaeld.conSfairmmpalteiopnuroifttyhweaasmnooutnptroofpelrulcyrcohcahreamcitcearlizperdopaonrdtitohnesintuthdey,
solution.
REFERENCES
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