Registration Dossier
Registration Dossier
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EC number: 242-560-0 | CAS number: 18765-38-3
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Short-term toxicity to fish studies conducted with 2-butoxyethanol indicate the lowest LC50 (7 d) value to be 983 mg/L for freshwater fish, and 96 h LC50 of 1125 mg/L for marine fish (EU RAR for 111-76-2).
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 983 mg/L
Marine water fish
Marine water fish
- Effect concentration:
- 1 125 mg/L
Additional information
In view of the rapid hydrolysis of the registered substance to silicic acid and 2-butoxyethanol and the absence of toxicity to aquatic organisms of silicic acid, the PNECaquatic(freshwater) will be based on data for 2-butoxyethanol.
Short-term toxicity to fish studies conducted with 2-butoxyethanol indicate reliable 96 h LC50 values to be in the range 1474 to 2137 mg/L for freshwater fish, and a 96 h LC50 of 1125 mg/L for marine water fish. In addition, a 24 h LC50 value of 1700 mg/l, 48 h LC50 values of 1395 -1575 mg/l and a 7 d LC50 value of 983 mg/l were reported for freshwater fish (EU RAR (2006))
EU RAR (2006): European Union Risk Assessment Report, 2-butoxyethanol CAS No.: 111-76-2, Volume 68, 2006.
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