Registration Dossier
Registration Dossier
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EC number: 246-680-4 | CAS number: 25155-30-0
Endpoint summary
Administrative data
Description of key information
Additional information
Data of following studies are demonstrating rapid biodegradation of C12-LAS (including sodium dodecylbenzene sulfonate (DBS)) under aerobic and anaerobic conditions. Temmink and Klapwijk (2004) conducted OECD 301F test and the result is that more than 60% of mineralisation was achie
Biodegradation of sodium dodecylbenzene sulfonate (DBS), at 10 ppm was measured 75% after 11 days and test temperature was maintained at 20 deg C for 17 days. The sodium dodecylbenzene sulfonate (DBS) could be conclued as readily degradable.ved within 28 days.
For dodecylbenzene sulfonic acid (Dodecylbenzene sulfonic acids (CAS# 27176-87-0 , EC Number; 248-289-4) ) is a very close analogue of Sodium dodecylbenzenesulfonate (CAS No. 25155-30-0, EC Number; 246-680-4) ) and the dissociated acid it readily dissociates in water and release the dodecylbenzene sulfonic anion in solution.), the available study indicates 69% of the material mineralized after 28 days ,OECD 301B test (USEPA 1992).
Ward and Larson (1989) conducted a laboratory study and observed the biodegradation rate constant and half-life for C12-LAS in sludge-amended soil. The biodegradation rate constant for C12-LAS is 0.030 day-1and half-life for C12-LAS is 23.1 days. Scheunertet al., (1987) measured the biomineralization rate of dodecylbenzenesulfonate in soil/water suspension under anaerobic and aerobic conditions for 42 days. The results (40.6%14CO2: aerobic, 51.9%14CO2: anaerobic) showed that the substance was readily biodegradable by the micro-organisms present in soil.
Summary of Biodegradation
Type/ Method |
Test material |
Degradation |
Duration |
References |
Aerobic/ OECD 301F |
C12-LAS |
> 60 % of mineralisation |
28 days |
Temmink and Klapwijk, 2004 |
Aerobic/ Other |
Sodium dodecylbenzenesulfonate |
75 % |
11 days |
Cook and Glodman, 1974 |
Aerobic/ OECD 301B |
Dodecylbenzenesulfonic acid |
69 % of mineralisation |
28 days |
USEPA 1992 |
Aerobic/ Other |
C12-LAS |
50% |
23.1 days |
Ward and Larson, 1989 |
Aerobic and Anaerobic/ Other |
Dodecylbenzenesulfonate |
40.6%14CO2of mineralization (aerobic), 51.9%14CO2of mineralization (anaerobic) |
42 days |
Scheunertet al., 1987 |
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