Registration Dossier
Registration Dossier
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EC number: 201-550-6 | CAS number: 84-66-2
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
10-day LC50 to Chironomus tentans: > 3100 mg/kg d.w.
Key value for chemical safety assessment
- EC50 or LC50 for freshwater sediment:
- 3 100 mg/kg sediment dw
Additional information
Modelling indicates that the substance will be mobile in water with negligible adsorption to sediment. It can be assumed that the outcome of tests through exposure to sediment pore water will not differ significantly from that arising through exposure in the overlaying water and, as a result, hazards resulting from uptake of sediment can be excluded. These assumptions are supported by tests conducted in sediment and the overlying water column:
Tests have been performed with the freshwater invertebrate Chironomus tentans to determine the acute toxicity of diethyl phthalate in sediment. The ten-day LC50 value was > 3100 mg/kg d.w. In addition, tests have been performed with the freshwater invertebrates Hyalella azteca, Chironomus tentans, and Lumbriculus variegatus to determine acute toxicity in the overlying water column. Ten-day LC50 values for the three benthic species were determined in water without sediment present. Values were - for Hyalella azteca 4.21 mg/L, Chironomus tentans 31.0 mg/L and Lumbriculus variegatus 102 mg/L.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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