Environmental Profiles of Chemical Flame-Retardant Alternatives for

Bioconcentration
Environmental Fate
Fish:
Conclusion: The bioconcentration factor has been adequately characterized.
Basis for Conclusion: The two studies cited in the table below provide consistent information
for killifish under both static and flow-through conditions, over a variety of observation times,
and with varying initial concentrations of test substance. The BCF was also measured in
goldfish; the reported BCFs are independent of study length.
Reference Species BCF
Ref. 46 Killifish 113
110
77
Exp.
type
Key Design Parameters
Range
(ppb)
Static 1,000
initial
Study
length T (/C)
24 hours
55 hours
96 hours
Comments
25 Half-life for elimination
of the test compound in
water + fish = 31 hours.
Ref. 46 Goldfish 5 Static 1,000 24 hours 25 Half-life for elimination
3 initial 96 hours of the test compound in
water + fish = 42 hours.
Ref. 47 Killifish 46±5
Daphnids: No data
Green Algae: No data
Oysters: No data
Earthworms: No data
32±4
31±6
59±16
49±12
Flowthrough
(all)
400
300
40
40
80
3 days
4 days
6 days
30 days
32 days
25 BCF is independent of
concentration; continuous
(flow-through) results
correlate to static results
(Ref. 46).
Fish Metabolism:
Conclusion: The metabolism of Proprietary A in fish is not adequately characterized in the
literature.
Basis for Conclusion: The depuration rate is adequately described in killifish, however, the
metabolite distribution is not addressed.
4-44