Registration Dossier
Registration Dossier
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EC number: 695-723-7 | CAS number: 150999-33-0
Endpoint summary
Administrative data
Description of key information
not readily biodegradable
Additional information
No data on the biodegradability of 1H-imidazolium, 3-ethyl-1-methyl-, benzoate are available. However, the test substance is an ionic liquid and dissolves in water to its ionic components benzoate and 3-ethyl-1-methyl-imidazolium. There are studies available for the biodegradability of benzoate in water (BASF SE, 1982; 1998). In a WoE approach, both studies conducted according to OECD 301 D or E, respectively, imply, that benzoate is readily biodegradable.
In contrast, studies with 1 -ethyl-3-methyl imidazolium ethylsulfate according to OECD Guideline 301B or OECD 301F (NOTOX, 2005; BASF SE, 2014) as well as studies with ethyl-methyl imidazolium chloride according to OECD Guideline 301A (BASF SE, 2003) did show, that the test substances are not readily biodegradable. Additionally, a study according to OECD Guideline 302B showed that 1-ethyl-3-methyl imidazolium ethylsulfate is not inherently degradable. Although these substances differ in their anionic part (target substance: benzoate, source substances: sulphate, chloride), they share the same cation (1 -ethyl-3 -methyl imidazolium). Therefore, the results of the cited studies can be transferred to 1H-imidazolium, 3 -ethyl-1 -methyl-, benzoate.
In conclusion, the substance 1H-imidazolium, 3 -ethyl-1 -methyl-, benzoate is regarded as not readily biodegradable.
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