Registration Dossier
Registration Dossier
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EC number: 246-131-9 | CAS number: 24293-43-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.213 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Acute studies with the three trophic levels fish, daphnids and algae have been performed according to OECD TGs and in compliance with GLP. The 96 h-LC50 for Oncorhynchus mykiss exceeded the highest concentration tested of 0.3 mg/L. For Daphnia magna, the 48 h-EC50 was determined to be > 0.1 mg/L. The test with Desmodesmus subspicatus revealed a 72 h-EC50 of > 0.025 mg/L.
A study with activated sludge has not been performed as sewage treatment plants are no compartment of concern for exposure to Di-2 -EHTDG. Furthermore, the substance is insoluble in water and readily biodegradable and thus, a test is not required.
Conclusion on classification
Di-2-EHTDG does not need to be classified. The substance is highly insoluble in water and no effects on aquatic organisms were observed at concentrations corresponding to the water solubility. Furthermore, the compound is readily biodegradable and thus, long term effects on aquatic organisms are not expected.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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