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Ecotoxicological information

Ecotoxicological Summary

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.211 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
2.112 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.021 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
100 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
0.76 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.076 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.028 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

All tests demonstrated that the acute EC50 and LC50 values are > 100 mg B-TEGME/L and hence, no classification and labelling is needed.

In accordance with column 2 of REACH Annex IX (section 9.1), "long-term toxicity testing shall be proposed by the registrant if the chemical safety

assessment according to Annex I indicates the need to investigate further the effects on aquatic organisms.".

Chronic tests for further refinement of the risk assessment are not required since the risk is already appropriately characterized by the above for following reasons: B-TEGME (1) will not be directly applied to the aquatic environment, (2) is readily biodegradable, (3) hydrolyses quickly and (4) has a low potential for bioaccumulation, i. e., the log Pow is << 3 . Therefore, it is very unlikely that B-TEGME will be transported to the aquatic environment via STP. Furthermore, it can be assumed that the potential hazard from B-TEGME is low since B-TEGME is not toxic to aquatic organisms (freshwater). Based on these characteristics, B-TEGME is not expected to cause adverse effects on aquatic organisms and hence long-term testing is not needed.