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Ecotoxicological information

Sediment toxicity

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Description of key information

No data on sediment toxicity of TPGDA are available.

Key value for chemical safety assessment

Additional information

In Annex X, Section 9.5.1, of Regulation (EC) No 1907/2006, it is laid down that chronic tests on sediment organisms shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on sediment organisms.   In Annex XI Section 3, it is laid down that testing in accordance with sections 8.6 and 8.7 of Annex VIII and in accordance with Annex IX and Annex X may be omitted, based on the exposure scenario(s) developed in the Chemical Safety Report (“Substance-Tailored Exposure-Driven Testing”). In accordance with Annex XI Section 3, it can be demonstrated in the risk assessment that the manufacture and the use of the substance do not pose an unacceptable risk for all environmental compartments as the risk characterization ratios (RCRs) of the chemical safety assessment are below 1 for all compartments (see Chemical Safety Report Ch. 10). In addition, If the log Koc and log Kow of the substance are below 3, a low adsorption potential is indicated. In case of TPGDA, the log Koc for the molecule is estimated to be in the range between 0.4 and 3 and thus indicates no potential for adsorption (see IUCLID Ch. 5.4.1). Based on the low log Kow and the low estimated BCF values, bioaccumulation in aquatic organisms is not to be expected (see IUCLID Ch. 5.3.1 As a consequence, a transfer to the sediment compartment is rather unlikely. Moreover, according to the hazard assessment of the substance, it is not classified as a PBT or vPvB the substance. Consequently, no test on sediment organisms is performed. The equilibrium partitioning method has been used for assessing the hazard to sediment organisms.