Benzenesulfonic acid, 4-C10-13-sec-alkyl derivs.

Additional ecotoxological information

Administrative data

Endpoint:

additional ecotoxicological information

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Basic data given: review article in which all information was assessed for adherence to guidelines/standards.

Data source

Reference

Reference Type:

publication

Title:

European risk assessment of LAS in agricultural soil revisited: Species sensitivity distribution and risk estimates

Author:

Jensen, J, Smith, SR, Krogh, PH, Versteeg, DJ, Temara, A

Year:

2007

Bibliographic source:

Chemosphere 69, 880-892

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

This is a review article of several studies regarding the ecotoxicity of LAS to soil organisms and plants in order to determine an overall PNEC for soil. All studies used to derive the PNEC were evaluated for adherence to testing guidelines and standards.

GLP compliance:

not specified

Type of study / information:

Review of several studies of terrestrial toxicity of LAS to soil macro-organisms and plants.

Test material

Test material information

Constituent 1

Reference substance name:

Benzenesulfonic acid, C10-13-alkyl derivs., sodium salts

EC Number:

270-115-0

EC Name:

Benzenesulfonic acid, C10-13-alkyl derivs., sodium salts

Cas Number:

68411-30-3

Molecular formula:

Not applicable for UVCB

IUPAC Name:

sodium 4-undecylbenzenesulfonate

Details on test material:

- Name of test material (as cited in study report): LAS

Results and discussion

Any other information on results incl. tables

The HC5 was determined to be 35.3 mg/kg soil. The 95% confidence interval was 18.6 -50.0 mg/kg. The PNEC for soil is therefore 35 mg/kg. The data used to calculate the PNEC is given below.

Data used in Determination of Soil PNEC

Species	Endpoint	EC10 (mg/kg soil)	EC50 (mg/kg soil)	Reference
Plants
Malva pusilla	Growth	110	204 (14-d)	Marschner, 1992
Solanum nigrum	Growth	120	169 (14-d)	Marschner, 1992
Chenopodium album	Growth	120	164 (14-d)	Marschner, 1992
Amaranthus retroflexus	Growth	110	142 (14-d)	Marschner, 1992
Nigella arvensis	Growth	52	133 (14-d)	Marschner, 1992
Galinsoga parviflora	Growth	55	90 (14-d)	Marschner, 1992
Brassica rapa	Growth	86	164 (14-d)	Gunther and Pestemer, 1992 Marschner, 1992
Avena Sativa	Growth	80	300 (14-d)	Gunther and Pestemer, 1992
Sinapis alba	Growth	200	300 (14-d)	Gunther and Pestemer, 1992
Sorghum bicolour	Growth	68	167 (21-d)	Windeat (1987)
Helianthus annus	Growth	116	289 (21-d)	Windeat (1987)
Phaseolus aureus	Growth	126	316 (21-d)	Windeat (1987)
Invertebrates
Eisenia foetida	Growth (14-d)	277		Swigert, 1989
Aporrectodea caliginosa	Reproduction	46		Krogh et al., 2007
Enchytraeus sp.	Reproduction	27		Holmstop and Krogh, 2001 Krogh et al., 2007
Folsomia fimetaria	Reproduction	107.6		Holmstrup and Krogh, 1996 Holmstrup et al., 2001 Jensen and Sverdrup, 2002
Folsomia candida	Reproduction	205		Krogh et al., 2007
Isotoma viridis	Growth	41		Jensen et al., 2001
Hypogastrura assimilis	Reproduction	100		Holmstrup and Krogh, 2001
Hypoaspis aculeifer	Reproduction	82		Holmstrup and Krogh, 2001
Platynothrus peltifer	Reproduction	320 (NOEC)		Jensen et al., 2001

Applicant's summary and conclusion

Conclusions:

The PNEC for soil is 35 mg/kg.

Executive summary:

This is a review article of several studies regarding the ecotoxicity of LAS to soil organisms and plants in order to determine an overall PNEC for soil. 9 invertebrate and 12 plant studies were used to calculate the PNEC. The data for both sets of studies were merged as the sensitivity of both types of species were similar. The PNEC for soil was determined to be 35 mg/kg soil.