Registration Dossier
Registration Dossier
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EC number: 700-518-3 | CAS number: 38233-76-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 59.8 ng/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 598 ng/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 5.98 ng/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 30 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- no exposure of sediment expected
Sediment (marine water)
- Hazard assessment conclusion:
- no exposure of sediment expected
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Additional information
Conclusion on classification
Acute toxicity to fish (Oncorhynchus mykiss), LC50(96 Hours) = 78.5 µg/L.
Acute immobilisation in aquatic invertebrates (Daphnia Magna), LC50(48 Hours) = 59.8 µg/L.Acute inhibition in aquatic plants (Pseudokirchneriella subcapitata), NOEC (Growth rate) = 53.0 µg/L (EC50value could not be determined as 50% growth inhibition was not observed when tested to limit of solubility).
Activated Sludge Respiration Inhibition Test (ASRIT, OECD209), EC50(3 Hours) > 1000 mg/L.
On the basis of the available data, Daphnia are anticipated to be the most sensitive species.
ETD is not considered to be readily biodegradable (refer to section 5 for details).
In the absence of suitable long-term aquatic toxicity data, the above results are used in conjunction with the ready biodegradability test result; ETD is classified as Chronic Category 1 and Acute Category 1 for hazard to the aquatic environment. As the LC50 value of the most sensitive species falls within the range 0.01 - 0.1 mg/L (10 - 100 µg/L), the proposed M-factor is 10 (the default value is used in the absence of any further data), as per table 4.1.3 of the second ATP to the CLP Regulation (Commission Regulation (EU) 286/2011). The relevant Hazard phrases applicable are: "H400, Very toxic to aquatic life", and "H410: Very toxic to aquatic life with long lasting effects".
The corresponding classification under the Dangerous substances directive is "R50/53, Very toxic to aquatic organisms and may cause long-term adverse effects in the aquatic environment".
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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