Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

No experimental data is available for the substance distillates (coal tar), heavy oils (anthracene oil high (> 50 ppm) BaP, AOH) itself, but data have been identified for the closely structure-related tar oil creosote (for read-across compare to CSR Chapter 5.3.4. and Chapter 7.1.). For this substance, the NOEC(28 d, collemboles) was estimated to be nominally 3.5 mg/kg soil dw, recalculated to standard soil (3.4 % organic matter) (Bruhnke 2007). No corresponding toxicity value for earthworm is available. Creosote caused only transient inhibitory effects on the activity of soil microorganisms at concentrations as high as 1000 mg/kg soil dw (nominal) (Scheerbaum 2007).

In addition, information is available for the marker substance phenanthrene that is used to characterise the terrestrial toxicity of AOH.

Chronic toxicity data for phenanthrene in soil are available for annelids, collembola, plants, crustaceans, and microbial processes. The data obtained on collembola (Sverdrup et al., 2001, 2002) are the lowest toxicity values that are considered as sufficient robust. Four EC10 values for Folsomia fimetaria in sandy loam soil are available (Sverdrup et al. 2002. The difference between the four values is the ageing of phenanthrene in the soil. The geometric mean of these EC10 values is 18 mg/kg dw (see also EU 2008).

Reference:

EU 2008: European Union Risk Assessment- Report of COAL-TAR PITCH, HIGH TEMPERATURE (Final draft version May 2008)[http://echa.europa.eu/documents/10162/433ccfe1-f9a5-4420-9dae-bb316f898fe1]