Registration Dossier
Registration Dossier
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EC number: 245-950-9 | CAS number: 23949-66-8
Ecotoxicological Summary
Administrative data
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:
- 100 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 62.02 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 6.202 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:
- 12.307 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
Although the substance did not show any toxic effects in acute aquatic toxicity studies on the throphic levels (fish, daphnia and algae) and also no toxicity towards sludge microorganisms was seen, PNECs have been derived for freshwater, marine water, intermittent release and sewage sludge treatment. Based on these PNEC, by using the partitioning method, PNECs for sediment, marine sediment and soil were derived in order to show that sediment and soil exposure is non-critical and the substance can be used safely.
No hazards to air are present, diven the lack of halogens in the molecule structure (ozone depletion) and the extremely low vapour pressure of 0.00000088 Pa.
Also, the substanc has no potential to cause toxic effects if accumulated through the food chain as no toxic effects were seen in ecotoxicological and toxicological studies performed. Despite this, based on the aquatic BCF of 143.4 as conservative value form QSAR predictions, potential for bioaccumulation is considered low.
Conclusion on classification
Although the substance in non-biodegradable and poorly water soluble (0.3 mg/L) the aquatic BCF derived by QSAR is 143.4 and thus well below 500. This, in combination with the lack of aquatic toxicity in three trophic levels (fish, daphni and algae) results in no classification for aquatic toxicity in accordance with CLP (Regulation EC No 1272/2008).
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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