Registration Dossier
Registration Dossier
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EC number: 247-557-8 | CAS number: 26264-06-2
Endpoint summary
Administrative data
Description of key information
Additional information
Data of following studies are demonstrating rapid biodegradation under aerobic and anaerobic conditions. Temmink and Klapwijk (2004) conducted OECD 301F test and the result is that more than 60% of mineralisation was achieved.
Biodegradation at 10 ppm was measured 75% after 11 days and test temperature was maintained at 20 deg C for 17 days. The substance could be concluded as readily biodegradable 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 Calcium dodecylbenzenesulfonate (CAS No 26264-06-2, EC Number;247-557-8) ) 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 |
Dodecylbenzene sulfonic acids (CAS# 27176-87-0 , EC Number; 248-289-4) ) is a very close analogue of Calcium dodecylbenzenesulfonate (CAS No 26264-06-2, EC Number;247-557-8) ) and the dissociated acid it readily dissociates in water and release the dodecylbenzene sulfonic anion in solution.
Sodium dodecylbenzenesulfonate (CAS# 25155-30-0 , EC Number; 246-680-4 ) is a very close analogue of Calcium dodecylbenzenesulfonate (CAS No 26264-06-2, EC Number; 247-557-8) ) and read-across is valid.
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