Registration Dossier
Registration Dossier
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EC number: 253-138-0 | CAS number: 36631-30-8
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
For read-across substance, tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate, sediment toxicity - NOEC = 740 mg/kg dry weight
Key value for chemical safety assessment
- EC10, LC10 or NOEC for freshwater sediment:
- 740 mg/kg sediment dw
Additional information
In accordance with REACH Regulation 1907/2006, Annex X, Column 2, studies of the effects on sediment organisms need be conducted if exposure assessment indicates a concern for exposure to that environmental compartment. The physico-chemical properties of the substance, together with fugacity modelling, indicate that it may be expected to be distributed into sediment should environmental release occur. Potential effects of read-across substance, tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate, on the sediment reworker, Chironomus riparius, have been investigated. The No Observed Effect Concentration (NOEC), based on the number of emerged adult insects, mean emergence time (development rate) and sex ratio of emerged adults, was 1000 mg/kg dry weight based on the nominal concentration, and 740 mg/kg dry weight based on the mean measured concentration of the substance in sediment.
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