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Ecotoxicological information

Ecotoxicological Summary

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Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
2 317.75 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
231.775 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:
462 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Acute studies are available for fish,Daphniaand algae for various members of this category. Differences have been observed between substances reacted with fumaric acid and substance reacted with maleic anhydride when tested in ecotoxicological studies. Therefore, read across between fumarated and maleated substances has not been conducted for ecotoxicity endpoints.

 

Environmental classification is assessed based data for the substance itself, where available, or using read across from another fumarated or maleated substance where data on the substance itself is not available. 

 

However, PNECs have been derived based on pooled data, with one set of PNECs derived to cover all maleated substances within the category and one set to cover all fumarated substances. The most sensitive result for any fumarated rosin substance has been used as the key value for PNEC derivation.

Conclusion on classification

The available ecotoxicity results indicate that there may be differences in environmental toxicity between substances reacted with fumaric acid and substances reacted with maleic anhydride, although the reasons for this are not clear. Therefore, although maleated and fumarated substances are structurally similar and it is appropriate for these substances to be considered within a single category, for ecotoxicity endpoints read across is not conducted between fumarated and maleated substances.

 

Acute fish, Daphnia and algal studies are available for fumarated substances in this category. The EL50 values from these studies are all >100 mg/L. However, as substances in this category are of low solubility, are not readily biodegradable and have log Kow values of >4 a "safety net" classification of Chronic Category 4 is assigned to rosin fumarated.