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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

The test substance 1,2-Benzenedicarboxylic acid, di-C6-10-alkyl esters was not tested. In the range of water solubility the structural related substance 1,2-Benzenedicarboxylic acid, di-C8-10-alkyl esters was not toxic under test conditions.The 96 hour LC50 was in excess of 0.32 mg/L, the highest concentration investigated which was at or in excess of the water solubility of the substance.

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Additional information

The acute toxicity of various phthalate esters was assessed in a number of freshwater species over a 96 hour period. No toxicity was observed up to the highest concentration tested. The 96 hour LC50 of the structural related substance 1,2-Benzenedicarboxylic acid, di-C8-10-alkyl esters was in excess of 0.32 mg/L, the highest concentration investigated which was at or in excess of the water solubility of the substance. For the another structurally related substances the LC50 in rainbow trout was in excess of 1.4 mg/L, in fathead minnow was in excess of 1.3 mg/L and in bluegill was in excess of 0.73 mg/L. These values represent the highest concentrations examined which were at or in excess of the water solubility of the phthalates.

Acute toxicity to a marine species, sheepshead minnow, has also been determined with the structurally related substance Diundecyl phthalate. The 96 hour LC50 was in excess of 0.22 mg/L, the highest concentration investigated which was at or in excess of the water solubility of the substance.