Sodium cumenesulphonate

Biodegradation in soil

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

biodegradation in soil: simulation testing

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is readily biodegradable

Reference 2

Endpoint:

biodegradation in soil: simulation testing

Type of information:

other: published data

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Justification for type of information:

The test substance (sodium dodecylbenzenesulfonate as a read across for Sodium cumenesulphonate)

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 307 (Aerobic and Anaerobic Transformation in Soil)

GLP compliance:

not specified

Test type:

laboratory

Radiolabelling:

yes

Oxygen conditions:

aerobic/anaerobic

Soil classification:

other: Alfisol

Details on soil characteristics:

- Soil : Air-dried and sifted to a particle size of 0.125 mmparticle size distribution ; Clay(<2 μm) 17%, silt(2-63 μm) 75%, sand(0.63-2 mm) 8%, organic matter 2.45%- Soil pH : 7.3

Initial conc.:

15 other: μg

Based on:

test mat.

Details on experimental conditions:

- Experience vessels; 1 litre wide-mouth bottles- Incubation mixture; 50g soil and 150ml water were equilibrated for 7 days at 35 deg C in oxygen or nitrogen. Then 15μg of 14C-labelled chemical was added in aqueous solution ot suspension.- Mechnical mixing; continuous shaking in a water bath (35 deg C)

% Degr.:

>= 40.6 - <= 51.9

Parameter:

CO2 evolution

Sampling time:

42 d

Transformation products:

yes

Conclusions:

The test substance (sodium dodecylbenzenesulfonate as a read across for Sodium cumenesulphonate) was readily biodegradable. And the degradation (mineralization) values in anaerobic environment was faster than those in aerobic environment

Description of key information

The study does not need to be conducted because the substance is ready biodegradable.

The test substance (sodium dodecylbenzenesulfonate as a read across for Sodium cumenesulphonate) was readily biodegradable. And the degradation (mineralization) values in anaerobic environment was faster than those in aerobic environment.

Key value for chemical safety assessment

Half-life in soil:

42 d

at the temperature of:

20 °C