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Ecotoxicological information

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Studies are available for toxicity to daphnia, algae and activated sludge microorganisms. Public studies are available for acute toxicity to fish both giving experimental and QSAR values.

The 96-hour LC50 of hexyl acetate to fish was found to be 4.4 mg/L. Two public domain studies were found which assessed the acute toxicity of hexyl acetate to fish. Eldred et al. (1999) gave an experimentally determined value for the acute toxicity to fish of 4.4 mg/L. Similarly, Veith et al (1985) found that the LC50 was 4.4 mg/L. As such, a weight of evidence approach has been taken and the lowest relevant EC50 for fish is 4.4 mg/L.

The 48-hour EC50 of hexyl acetate to Daphnia magna was determined to be 9.1 mg/L.

The 72-hour EC50 of hexyl acetate to algae was found to be 12mg/L and the NOEC was found to be 2.7 mg/L.

The 3-hour EC50 of hexyl acetate to STP microorganisms was found to be 100 -1000 mg/L (100 mg/L used for PNEC derivations as a conservative assumption). The NOEC was 100 mg/L.