Registration Dossier
Registration Dossier
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EC number: 203-678-8 | CAS number: 109-53-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.072 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.283 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.007 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 337.6 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.457 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.046 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:
- 0.049 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Official classification:
Aquatic compartment
According to Regulation (EC) No 1272/2008 Annex VI Table 3.1 and Table 3.2 the substance holds no relevant classification.
Self-classification:
According to the criteria outlined in Table 4.1.0(a) (Commission Regulation (EU) No 286/2011 amending Regulation (EC) No 1272/2008), the substance is not to be classified as acutely hazardous to the aquatic environment since the lowest acute effect value is greater than 1 mg/L (Fish, 96-LC50 = 28.3 mg/L).
Long-term toxicity data are available for all three trophic levels: fish, aquatic invertebrates and algae. Therefore, classification is based on the available chronic data.
Chronic toxicity data:
The substance is rapidly degradable. The lowest EC10 is > 0.01 and <= 1 mg/L (aquatic invertebrates, ChV = 0.724 mg/L). According to the criteria outlined in Table 4.1.0(b) (ii) (Commission Regulation (EU) No 286/2011 amending Regulation (EC) No 1272/2008), the substance is to be classified as chronically hazardous to the aquatic environment (Category Chronic 3).
It can be concluded that the substance is not to be classified as acutely hazardous, but as chronically hazardous to the aquatic environment (Category Chronic 3).
Hydrolysis products:
As isobutyl vinyl ether is readily biodegradable, abiotic hydrolysis and the potentially forming hydrolysis products are not relevant for classification.
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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