Registration Dossier
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EC number: 203-961-6 | CAS number: 112-34-5
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Scenedesmus subspicatus. 96hr EC0>100mg/l (OECD201)
Pseudokirchneriella subcapitata: 72hr EC50=1101mg/l (similar to OECD201)
Scenedesmus quadricauda: 8 day EC3 =1000mg/l (protocol: no data)
Microcystis aeruginosa: 8 day EC3=53mg/l (protocol: no data)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1 101 mg/L
Additional information
There sufficient data available on the toxicity of 2 -(2 -butoxyethoxy)ethanol to algae. There is a guideline and GLP limit test study available which confirms that the substance is of low toxicity. There is also a published study caried out to a modern guideline that contains a measured EC50 value (Aruoja, 2014). Whilst the GLP data is sufficient for classification and labelling, the published study is used as a based to derive the critical value for this end point, an EC50 of 1100mg/l.
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