Registration Dossier
Registration Dossier
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EC number: 203-560-6 | CAS number: 108-20-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.19 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.9 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.019 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 37 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 2.79 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.28 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:
- 0.47 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The key PNEC is the PNEC aqua (freshwater) of 0.19 mg/L.
Conclusion on classification
Acute aquatic toxicity: The fish, daphnia, and algae acute aquatic toxicity are greater than 1 mg/L (96h LC50 (fish) = 402 mg/L, 48h EC50 (daphnia) = 190 mg/L, and 96h EyC50 (algae) > 1000 mg/L). As a result, the substance does not meet the criteria for classification according to Regulation (EC) No 1272/2008, Annex I section 4.1.
Chronic aquatic toxicity: According to the Guidance on the Application of the CLP Criteria (ECHA Reference ECHA-09-G-02-EN), if the acute aquatic toxicity is greater than 100 and the substance is not rapidly degradable though there is a low potential for bioaccumulation (log Kow = 1.52-2.4), the substance should be classified as Chronic 4.
However, as DIPE volatilises rapidly from water into air and there is easily photodegraded (this is consistent with data on rapid volatilisation from the aqueous environment (see Henry Law constant) and rapid abiotic degradation in air (see Phototransformation DT50 < 0.5 days), indicative of rapid degradation, fulfilling the rapid degradation criterion.) the substance is considered to be rapidly degradable as indicated in the CLP regulation (EC) No 1272/2008.
As a result, the substance does not meet the criteria for chronic classification according to Regulation (EC) No 1272/2008, Annex I section 4.1.
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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