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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:
0.032 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.32 mg/L

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.89 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:
3.5 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

This category covers the acid form and various sodium salts of HEBMP-H. The different salts are prepared by neutralising the acid to a specific pH. All category members are based on the HEBMP-H structure. Measured data are available for some salts and the acid form. The substances are commercially available as aqueous solutions only and in an environmental context the speciation will be the same. The properties of the members of the category are consistent across all endpoints. The category hypothesis is that all the members are various ionised forms of the same parent acid constituents, which coexist in solution at an equilibrium defined by the pH. The main assumption is that sodium is not significant in respect of all the properties under consideration. In dilute aqueous conditions of defined pH a salt of a constituent will behave no differently to the constituent parent acid, at identical concentration of the particular speciated form present, and will be fully dissociated. Hence some properties (measured or expressed in aqueous media, e.g. ecotoxicity) for a salt can be directly read-across (with suitable mass correction) to the parent acid constituent and vice versa, and from one salt to another.

Conclusion on classification

Hazards to the aquatic environment (acute/short-term): not classified on the basis of the lowest E(L)C50 in short-term test results in fish and invertebrates is 64 mg/l (48-h, invertebrate Acartia tonsa) according to the CLP Regulation (EC.n.1272/2008).

Hazards to the aquatic environment (long-term):Category Chronic 3 (H412) on the basis of the lowest E(L)C50 in short-term test results in fish and invertebrates is 64 mg/l (48-h, invertebrate Acartia tonsa) according to the CLP Regulation (EC.n.1272/2008).