Environmental Profiles of Chemical Flame-Retardant Alternatives for

Study
Reference
Dawson et
al., 1977
Food and
Drug
Research
Labs, 1979
Species
Tested
Bluegill
sunfish
Table 1-1. Summary of available acute fish toxicity studies for triphenyl phosphate (115-86-6) a
96-Hour
LC50
290,000
:g/L
Water
solubility
is approx.
2,000
:g/L
Silverside 95,000
:g/L
Rainbow
trout
Water
solubility
is approx.
2,000
:g/L
Study
Type
Concentration
Range Tested
Static 5 concentrations,
125,000 to
560,000 :g/L
Static 5 concentrations,
75,000 to
560,000 :g/L
760 :g/L Static 5 concentrations,
180 to 1,800
:g/L
Selected Study Design Parameters
No. of
Fish/
Conc
Not
reported
Analytical
Monitoring
Water
Chemistry b Solvent
No Dilution water
was reported to
have a pH of
7.6-7.9 and a
hardness of 55
mg/L. Target
temp. was 23°C
for bluegill and
20°C for
silverside
10 No pH: 7.2-7.5
Temp:
12°C±1°C
DO: 7.8-10
mg/L
Hardness: 42
mg/L
1-28
Either distilled
water or solvent
with
(reportedly)
relatively low
toxicity was
used.
Concentration
of solvent, if
used, was not
reported.
Unidentified
solvent
Comments on the Data
The reported LC50 value
from this study is
substantially higher than the
water solubility of TPP
(approx. 2,000 :g/L);
therefore, these data are
unreliable.
Study reportedly followed
U.S. EPA (1975) guidelines.
Solvent and blank controls
were used. Loading rate was
0.15 g/L.