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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The substance 2-methylbut-2-ene at a concentration of 2.1 mg/L, was not inhibitory to the normal biodegradation of sodium benzoate by microbial inoculum. The 5 day NOEC is estimated to be >2.1 mg/L.

Key value for chemical safety assessment

EC10, LC10 or NOEC for microorganisms:
2.1 mg/L

Additional information

One reliable proprietary study, Huntingdon (2004e) is available for the isomer 2-methylbut-2-ene. The substance 2-methylbut-2-ene, at a concentration of 2.1 mg/L, was not inhibitory to the normal biodegradation of sodium benzoate by microbial inoculum. The 5 day NOEC is estimated to be >2.1 mg/L.