Document 3eorLageVBR5g0442Rw2ZoqOn
AR226-3019
STATIC, ACUTB 48-KOOR SCMECRZlia TMT 0V 8-21095 TO csehaix WBHI
POSJPOSS;
This is a rangefinding study deigned to provide an estimat* of aquatic toxicity using fixed test concentrations and data oeasureiB^s^' ' at predetermined intervals.
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tone Available
30*
TEST COWOXTXQBfS
HOBAa&l eoaea6ratdLocu f-'fds 0, 0.5, 1.0, SO, 500, and 5000 ing/L. Diolvfi OiggMt lid pKs
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Ka^.Eial Cone*Bte6ici ^Wl4?<MI (B/t.)
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0
0.5 1.0
50 500
5000
taken
8 .6
8.6
6 .6
a.6
8 .6
8.6
S .5
8.5
6 .0
8.0
6 .1
6.1
approximately 24
8.7
9.7
8. 3
8.7 a.7 8. 3
8.7 8.7 8. ^
8.7
.7
S. 3
8.S
a.6
7. 8
B.e 8.6 6. 38
hours after exposure du
Pag l of a
8 .3
8.3 8 .3 a .3
-.8
6 .2
8.7 8.8
8.7 8.S s.s*
8.7*
8.7 .?
8.7
W
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l?ft.
to fcatal aorfcaiJEty.
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Based on visual observations, all solutions were clear at test. start, except for 5000 mg/L which was slightly yellow in color. At 24 hours after exposure, the 50 mg/L test solutions were slightly cloudy, and the 500 mg/L test solutions were sloudy. Imroobilities were 0, 0, 0. 0, 100, and i00, respectively. The
48-hour EC50, based on nominal concentrations aad immobility, was between 50 and
500 mg/L. All water quality parameters were within acceptable limits.
CONCLDSIOHS
' -
H-21095 exhibited slight- toxicity in a 48-hour, unaerated. static acute text
'using Daphnia macma.
WORK CTf
--------^^ s W. Wet eel cology Associate
APPROVXD BY:
Michelle R. Bcown, B.A. Study Director
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Ho/Day/Year
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Ho/Day7Ye?-
DISTRIBUTIOK:
K.D. Dastur (11
J.J Fitzgerald (1)
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