Registration Dossier
Registration Dossier
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EC number: 204-200-0 | CAS number: 117-61-3
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
Half life period of Benzidine-2,2’-disulphonic acid in soil was observed to be 75 days. Based on these half life values it is concluded that Benzidine-2,2’-disulphonic acid is not readily biodegradable (persistent) in soil since the half life period of Benzidine-2,2’-disulphonic acid exceeds the EPA criteria of 60 days (to qualify the chemical as persistent)
The supporting study also indicates that the half life of Benzidine-2,2’-disulphonic acid to be 1800 hrs (75 days).
Key value for chemical safety assessment
- Half-life in soil:
- 75 d
Additional information
Based on the Level III Fugacity Model , the half life period of the Benzidine-2,2’-disulphonic acid was estimated.
Half life period of Benzidine-2,2’-disulphonic acid in soil was observed to be 75 days. Based on these half life values it is concluded that Benzidine-2,2’-disulphonic acid is not readily biodegradable (persistent) in soil since the half life period of Benzidine-2,2’-disulphonic acid exceeds the EPA criteria of 60 days (to qualify the chemical as persistent)
The supporting study also indicates that the half life of Benzidine-2,2’-disulphonic acid to be 1800 hrs (75 days).
Medium |
Half life in Days |
Percent in medium |
Soil |
75 |
87% |
Media |
Half life (hrs) |
Percent in medium |
Emission (kg/hr)
|
Soil |
1800 |
87.3%
|
1000 |
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