Environmental Profiles of Chemical Flame-Retardant Alternatives for

Study type/
Method Innoculum Acclim Degradation Time Comments Reference
Japanese
MITI test
Activated
sludge
avg. 1% by
BOD
OECD 302C 0% by O 2
uptake
River Die-
Away
Water from
Oh River
(Osaka,
Japan)
Neya River
(Osaka,
Japan)
Seawater
(Osaka Bay)
Anaerobic Biodegradation: No data
Porous Pot Test: No data
12.5%
18.5%
0%
5.4%
0%
22%
28 days Initial concentrations
100 mg/L (test
substance), 30 mg/L
(sludge).
CERI, 1999;
HSDB, 2003;
Chemicals
Inspection and
Testing
Institute, 1992
28 days WHO, 1998
7 days
14 days
7 days
14 days
7 days
14 days
Initial concentrations
20 mg/L in Oh River
water and 1 mg/L in
Neya River water.
Concentration in
seawater not
reported.
Analysis by
Molybdenum Blue
calorimetric assay for
increase in phosphate
ion.
WHO, 1998
Pyrolysis:
Conclusion: The available pyrolysis data are not adequate.
Basis for Conclusion: Although a semi-quantitative description of the pyrolysis products is
given in the Choudry and Hutzinger paper, the list of degradates provided accounts for only 60%
of the total mass expected and doesn’t contain any oxygenated or phosphorus-containing
compounds. Therefore, this study does not provide a complete profile of the pyrolysis of
TDCPP.
Pyrolysis Products Reference
Relative mol.% degradates, 0.1 mole TDCPP heated at 250-260/C under
reduced pressure (3 mm Hg), overall yield 60 wt%: trans-1,3dichloropropene
26.7%, cis-1,3-dichloropropene 36.0%, 1,2,3trichloropropane
34.4%, 1-chloro-2-propene 2.9%.
Thermal oxidative degradation in air at 370/C: Hydrogen halides,
halogenated C2 and C3 species, acrolein
3-46
Choudhry and Hutzinger, 1982
HSDB, 2003