Environmental Profiles of Chemical Flame-Retardant Alternatives for

Species Rate Comment Reference
Killifish Elimination half-life, 1.65 hours Depuration rate ­
elimination of TDCPP
when exposed fish are
moved to clean water.
Killifish Apparent metabolism is much
faster in killifish than in goldfish.
(Quantitative data are not
provided.)
Goldfish Apparent metabolism is much
slower than in killifish.
(Quantitative data are not
provided.)
Degradation and Transport
Photolysis in the Atmosphere: No data
Photolysis in Water: No data
Photolysis in Soil: No data
Aerobic Biodegradation:
~10% of applied TDCPP
remains in the water in
the presence of killifish
after 96 hours. Control
(no fish) has no change in
TPP concentration.
~25% of applied TDCPP
remains in the water after
96 hours in presence of
goldfish.
Sasaki et al., 1982
Sasaki et al., 1981
Sasaki et al., 1981
Conclusion: The biodegradation of TDCPP under aerobic conditions has been adequately
characterized.
Basis for Conclusion: The key study (highlighted) was performed according to a GLPcompliant
OECD guideline test. The other data located in the literature are generally in
agreement with the key study.
Study type/
Method Innoculum Acclim Degradation Time Comments Reference
OECD
Guideline
301B
Modified
Sturm Test
Activated
sludge
0% by CO 2
evolution.
DOC red. not
calculated
due to
solubility
issues.
3-45
28 days Initial concentrations
2, 10 mg/L. GLPcompliant.
Also reported:
1) Closed bottle test
(OECD Guideline
301D) showed no
inhibition of bacterial
cultures in 10 days.
Akzo Nobel,
2001a,b; Akzo
Chemicals
Incorporated,
1990