Registration Dossier
Registration Dossier
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EC number: 253-775-4 | CAS number: 38083-17-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.79 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.239 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.079 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.239 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.44 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.044 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:
- 2.42 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 3.33 mg/kg food
- Assessment factor:
- 90
Additional information
The PNEC for aquatic freshwater toxicity was derived based on three long-term studies with freshwater organisms. As no results for marine organisms were available, the PNEC aquatic marine water was based on the PNEC aquatic freshwater with a higher AF.
No studies on the toxicity to sediment dwelling organisms are available. The PNECs were therefore calculated with the help of the EPM based on aquatic toxicity data. As the substance has a log Kow of < 5 (3.83) no additional assessment factor has to be applied for the risk assessment.
The PNEC soil was derived based on long-term studies for four species from three diffenent trophic levels.
Conclusion on classification
CLP Regulation:
Aquatic acute toxicity:
The lowest EC50 is < 1.0 mg/L (0.0239mg/L) and thus the substance has to be classified as category acute 1 (H400). Additionally a M-factor of 10 has to be applied.
Aquatic chronic toxicity:
According to Table 4.1.0 in the 2nd Amendment of Regulation (EC) No 1272/2008, for substances for which adequate chronic toxicity data are not available for all three trophic levels, chronic toxicity has to be assessed based on the chronic data and on the acute data for the levels where no chronic data are available. Based on the lowest available chronic value (ErC10 = 0.0079 mg/L) a classification as category chronic 1 (H410) applies (M-factor 10).
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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