Registration Dossier
Registration Dossier
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EC number: 211-309-7 | CAS number: 637-92-3
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The 96-h LC50 is >974 mg/l in the freshwater fish Poecilia reticulata. For marine water fish the 96-h LC50 is 574 mg/l for MTBE found in Menidia beryllina, a safety factor of 10 will be applied on this value.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 974 mg/L
Marine water fish
Marine water fish
- Effect concentration:
- 57.4 mg/L
Additional information
Only one reliable study is available for ETBE in freshwater fish. The study is a non-GLP compliant OECD guideline study with the guppy Poecilia reticulata. The purity of the test substance was not known and the effect concentrations were based on nominal values. The 96 -h LC50 is > 974 mg/l (Slovnaft VÚRUP, a.s., 2005b). As no data is available for marine fish, the data from MTBE are used for read-across, the lowest effect concentration in marine fish for MTBE is a 96-h LC50 of 574 mg/l in inland silverside (Menidia beryllina)(BenKinney et al., 1994), applying a safety factor of 10 to this value results in an effect concentration of 57.4 mg/l for ETBE. Both values for freshwater and marine water will be used in the assessment.
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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