Registration Dossier
Registration Dossier
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EC number: 201-545-9 | CAS number: 84-61-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.04 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.02 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.104 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.02 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.06 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.11 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:
- 0.31 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 133 g/kg food
Additional information
The PNEC for waste-water treatment is 10 mg/l based on the NOEC of 100 mg/l and an assessment factor of 10.
Conclusion on classification
Dicyclohexyl phthalate has been investigated for acute aquatic toxicity in fish (result LC50 (96h, Oryzias latipes) > 2 mg/l), in daphnia (result EC50 (48h daphnia magna) > 2 mg/l) and algae (result EC50 (72h, Pseudokirchnerella subcapitata) > 2 mg/l), the substance is readly biodegradable and has a BCF of 85 therefore it can not be classified for acute aquatic toxicity.
One long-term toxicity to aquatic invertebrates (Daphnia magna) showed a NOEC (21d)= 0.181 mg/L. Additionally a NOEC (64d) of 66.6 μg/l was identified in the fish sexual development study. Some other effects were observed in lower concentrations but should not be accounted for classification purposes.
Considering the above, a classification of the substance as an Aquatic Chronic 2 (H411), is proposed.
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