Registration Dossier
Registration Dossier
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EC number: 274-490-1 | CAS number: 70236-60-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 10 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.1 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2 530 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 4.56 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.456 µg/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:
- 0.324 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Adequate chronic toxicity data are not available for Acid Brown 282 (ABr282), therefore the aquatic toxicity assessment and classification are based mainly on the short-term toxicity data available.
The key values chosen for Chemical Safety Assessment concerning the aquatic compartment are the following:
- for the short-term toxicity to fish (Poecilia reticulata) the LC50 (96h) was recorded in the range of 1 and 10 mg/l
- for short-term toxicity to aquatic invertebrates (Daphnia magna) the EC50 (48h) resulted to be greater than 100 mg/l
- for toxicity to aquatic plants other than algae (Lemna minor) the EC50 (7d) based on growth rate and yield were estimated to be 22.7 and 227 mg/l, respectively
- for toxicity to microorganisms the EC50 (3h) was determined to be 253 mg/l
The outcomes of the tests performed on the three trophic levels suggest that fish is the most sensitive species.
In order to derive the PNEC water (both freshwater and marine water), the short-term effect level of the most sensitive species was chosen. Thus, the lowest range value of the LC50 fish toxicity range has been selected.
Conclusion on classification
Adequate chronic toxicity data are not available; Acid Brown 282 (ABr282) is not readily biodegradable and has a negative log kow (-0.0752).
On the basis of the short-term toxicity data on the three trophic levels (details above), ABr282 can be classified as hazard to the aquatic environment in category 2 (H411), according to the CLP Regulation (EC 1272/2008).
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