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Ecotoxicological information

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The acute toxicity of Tri-C18-22 (even numbered)-alkyl 2-hydroxypropane-1,2,3-tricarboxylate towards aquatic species was not specifically determined.

However, data for a structurally related substance Tri (hexyl, octyl, decyl) citrate are available with the only difference in shorter carbon chain ester groups. The available data demonstrate a lack of acute toxic effects (NOEC > 100 mg/L) in the range of water solubility, which for the shorter chain esters should even be higher than for the submision substance.

Based on adult Daphnia magna mortality, the 21 day LC50 for Daphnia magna exposed to the related substance Tri (hexyl, octyl, decyl) citrate was calculated to be 0.0633 mg/L. Based on the cumulative adult mortality after 21 days, the highest no observed effect concentration (NOEC) of Tri (hexyl, octyl, decyl) citrate was observed to be 0.003 mg/L, and the lowest observed effect concentration (LOEC) was observed to bei 0.01 mg/L.

The 21 day reproduction EC50 for Tri (hexyl, octyl, decyl) citrate to Daphnia magna based on the mean number of live juveniles per surviving adult was calculated to be 0.194 mg/L. Based on the production of live juveniles after 21 days the highest no observed effect concentration (NOEC) was caculated to be 0.098 mg/L and the lowest observed effect concentration (LOEC) was calculated to be 0.313 mg/L.