Registration Dossier

Diss Factsheets

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.