Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 33.3 mg/kg food
- Assessment factor:
- 300
Additional information
Conclusion on classification
Although the test results would strictly fit the criteria for R53/H413 environmental classification, it is in our opinion not applicable for this substance for the following reasons:
As stated in section 5.2.1, the results of the Modified Sturm test cannot be interpreted because the tested concentration was far above the maximum water solubility. Thus, in view of lack of the optimal contact between the test substance and the medium in the test, no definitive conclusions can be drawn with respect of biodegradability of the test substance.
Furthermore, an enhanced ready biodegradation test is technically not possible as the test substance is a waxy solid which could not be dissolved in any common organic solvent or mixtures of solvents.
The estimated logPow value for the substance > 10, together with the high molecular weight range of the test substance (1763 - 2891, see reference substance) indicate a limited bioavailability of the substance.
Because no quantitative analysis of the test substance in water or corn oil could be developed or validated (see section 8), any further testing to prove the lack of long-term toxicity or bioaccumulation in the aquatic environment is not deemed appropriate.
Based on the reasons stated above, we strongly believe that the substance should not be classified.
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