Registration Dossier
Registration Dossier
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EC number: 412-570-1 | CAS number: 119462-56-5 PERKALINK 900
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.74 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.74 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.174 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.174 µg/L
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.116 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.012 mg/kg sediment dw
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 1.02 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The aquatic toxicity was tested on all tropic levels and showed that fish are the most sensitive species with an 96h LC50 of 0.174 mg/L. Two chronic values are present; one from the algal assay of 11 mg/L and one from a Daphnia magna reproduction study, which gave the lowest EC10 on reproduction of 0.205 mg/L. 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene is biotically degradable however the criterion of >70% COD or 60% CO2 evolution was not reached within 28 days. The substance is abiotically degradable with a half-life of 68.5 hours at 25°C. The CLP regulation states (chapter 4.1.2.9.4) that hydrolysis can be considered if the hydrolysis products do not fulfill the criteria for being hazardous to the aquatic envirionment. However the hydrolyis products are unknown and therefore cannot be evaluated. The following classifications are applicable
1. H400: Based on the lowest acute value of 0.174 mg/L the substance is aquatic acute cat. 1
2. H411: Based on the lowest chronic value of 0.205 mg/L for degradable substances with unknown hydrolysis products, 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene is aquatic chronic cat. 2.
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