Registration Dossier
Registration Dossier
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EC number: 267-051-0 | CAS number: 67774-74-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 14.2 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 7.96 mg/kg soil dw
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Linear alkylbenzenes, at concentrations up to and exceeding the water solubility limit, had no short term effects on all three trophic levels tested (fish, invertebrates and algae).Therefore, the substance is not classified as acute aquatic hazard in accordance with EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation No. 1272/2008.
Following the ECHA Guidance on the application of the CLP criteria (2015), which recommends testing of complex substances using the Water Accommodated Fraction (WAF) method, a GLP-compliant OECD 211 guideline Daphnia magna study was conducted using the WAF dosing method (Minderhout et al. 2013). In this study there were no biological or reproductive effects noted. The 21-d NOEL is > 10 mg/L (WAF), the highest dose tested.
An additional 21-day chronic study with Daphnia was conducted and resulted in a NOEC of 0.0075 mg/L. However, this test exceeds the criteria, due to the solvent concentration (1 mg/L) was above the recommended level for solvent addition (< 0.1 mL/L) (OECD 211 Guideline). It was therefore only used for the derivation of the PNEC (considering its conservative value), but not for the environmental classification. The long-term toxicity data are avilable for fish and algae as well, whcih NOECs were both greater than the highest tested nominal concentrations. Based on these results, the substance was not classified for chronic aquatic hazard in accordance with EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation No. 1272/2008.
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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