Registration Dossier
Registration Dossier
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EC number: 203-628-5 | CAS number: 108-90-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.25 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.025 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1.4 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 6.75 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.67 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:
- 1 mg/kg soil dw
- Assessment factor:
- 1 000
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 0.01 g/kg food
- Assessment factor:
- 90
Additional information
The aquatic and soil PNEC are based on study results whereas PNEC sediment are calculated using the equilibrium partitioning method. Furthermore, PNEC stp is assessed using a study result and the PNEC oral is determined based on toxicological results.
Conclusion on classification
According to the criteria of Annex I of the regulation (EC) No 1272/2008 (CLP), the registered substance should not be classified for environment based on available and reliable data in the current dossier (update 2022):
- The substance is not readily biodegradable,
- Lowest acute Toxicity data is obtained with algae: 72h-ErC50=11.4 mg/L
- Lowest chronic toxicity data is obtained with aquatic invertebrates:21d-NOEC= 2.5 mg/L
The registered substance has an harmonised classification in Annex VI to CLP regulation (1272/2008) as Aquatic Chronic toxicity 2. Based on data available in dossier before the update of 2022, the following chronic data were considered for classification : 28d-NOEC (ELS)=4.8 mg/L, 16d-NOEC=0.32 mg/l (Daphnia magna),72h-EC10=5.8 mg/L (Desmodesmus subspicatus, algae). The classification as Aquatic Chronic 2 is based on results of the most sensitive aquatic organisms, Daphnia magna. Chronic study on daphnids (Bobra, 1985) used for classification can not be considered as reliable as this study does not follow a real OECD guideline, it is not GLP and no analytical monitoring was performed.
For the update of the dossier in 2022, all data have been reassessed and new chronic data have been provided to improve the quality of the dossier. Based on reliable data in the dossier, the substance is not classified for acute and chronic toxicity.
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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