Benzenesulfonic acid, mono-C10-13-alkyl derivs., compds. with diethanolamine

Toxicity to soil macroorganisms except arthropods

Description of key information

There are no experimental data available for the test item. Alternatively, a read-across approach is applied. The following values were obtained for the respective source substance:

NOEC = 20 mg LAS Na/kg dry weight

EC50 = 6.2 mg LAS Na/kg dry weigh

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:

6.2 mg/kg soil dw

Long-term EC10, LC10 or NOEC for soil macroorganisms:

20 mg/kg soil dw

Additional information

No experimental data on toxicity is available for the test item. Alternatively, experimental data for one source substances is available and a read-across approach is applied. Please refer to read-across justification document attached in IUCLID Section 13. For further supporting information please refer to respective REACH registration dossier of each source substance.

Source substance 2 (LAS NA, CAS 68411-30-3)

In a 14 day long term toxicity test to soil macroorganisms, earthworms (Eisenia fetida) were exposed to Benzenesulfonic acid (C10-13-alkyl derivs., sodium salts, CAS 68411-30-3) in a laboratory study with artificial soil. Nominal test concentrations were 63, 125, 250, 500, and 1000 mg/kg dw. The test animals were examined for mortality, behaviour, health, and reproduction on days 7 and 14. 5% mortality was seen at the highest concentration. Effects to health were seen at the 500 and 1000 mg/kg dw concentrations. The 14 -day LC50 was > 1000 mg/kg dw (nominal), and the NOEC was 250 mg/kg dw (nominal). This test is according to the OECD Guideline 207.

 

In a 21 day long term toxicity test to soil macroorganisms, annelids (Enchytraeus albidus, Aporrectodea caliginosa, Aporrectodea longa) were exposed to Benzenesulfonic acid (C10-13-alkyl derivs., sodium salts, CAS 68411-30-3) in a laboratory study with agricultural soil. Nominal test concentrations were 20, 40, 80, 200 and 400 mg/kg. The 21-day EC10 to E. albidus was 6.2 mg/kg dry weight (nominal), NOEC was 20 mg/kg dry weight (nominal) and LOEC 40 mg/kg dry weight (nominal). This toxicity study is classified as acceptable, as it is well documented and meets generally accepted scientific principles, according to ISO 11268-2.

 

In a 28 day long term toxicity test to soil macroorganisms, earthworms (A. caliginosa, E. crypticus) were exposed to Benzenesulfonic acid (C10-13-alkyl derivs., sodium salts, CAS 68411-30-3) in a laboratory study with natural soil. Nominal test concentrations were 10, 40, 60, 80, 100, 120 mg/kg soil, measured concentrations 0.65, 7.1, 26.3, 45.5, 60.3, 92.4, 102.7 mg/kg soil. EC10 values based on reproduction were 46 mg/kg soil for A. caliginosa, and more than 120 mg/kg soil for E. crypticus. This toxicity study is classified as acceptable, as it is well documented and meets generally accepted scientific principles, similar to ISO 16387.

 

In a long term toxicity test to soil macroorganisms, annelids (Eisenia foetida, Lumbricus terrestris, Aporrectodea caliginosa, Aporrectodea longa, Enchytraeus albidus) were exposed to Benzenesulfonic acid (C10-13-alkyl derivs., sodium salts, CAS 68411-30-3). Details of nominal and measured concentrations are not available in the study report. The lowest NOEC for Reproduction (Platynothrus peltifer) was 320 mg/kg dry weight, EC10 for reproduction was 6.2 mg/kg dry weight (Enchytraeus albidus) and EC50 for reproduction was 40.5 mg/kg dry weight (Enchytraeus albidus). Values were extracted from a variety of original references.