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Ecotoxicological information

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Available acute and chronic toxicity data indicate that tall oil (i.e. C16-18 fatty acids) is non-toxic to fish up to and including its water solubility limit. Based on acute effect concentrations available for the aquatic risk assessment, fish do not appear to be most sensitive. Tall oil (i.e. C16-18 fatty acids) is also expected to be non-toxic to aquatic invertebrates up to and including its water solubility limit. Based on acute effect concentrations, aquatic invertebrates do also not appear to be most sensitive. Fatty acids are a natural component of the environment, represent a significant part of the normal daily diet of e.g. fish and invertebrates and are rapidly degraded and therefore not expected to accumulate in the environment. Thus, based on a low potential for acute toxicity to fish and invertebrates and ready biodegradability, tall oil is not expected to be toxic long-term.

Tall oil (i.e. C16-18 fatty acids) is also expected to be non-toxic to algae up to and including its water solubility limit. Based on acute effect concentrations available for the aquatic risk assessment, algae do not appear to be sensitive. Fatty acids as contained in plant tissue are a natural component of the environment, are rapidly degraded and therefore not expected to accumulate in the environment. Available data further indicate a low toxic potential of tall oil to microorganisms. Fatty acids as contained in plant and animal tissue are a natural component of the environment, are rapidly degraded by microorganisms and therefore not expected to accumulate in the environment.

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