Registration Dossier
Registration Dossier
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EC number: 231-912-9 | CAS number: 7778-74-7
Biodegradation in soil
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in soil, other
- Type of information:
- experimental study
- 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
- Qualifier:
- no guideline followed
- Version / remarks:
- well described testing procedure
- Principles of method if other than guideline:
- The methodes used for the tests are well described.
The publication describes:
- The exact places of collection of the soil
- The initial concentration of ClO4- (max. 5 ppm)
- The procedure of preparing the test bottles and incubating them for 60 days
- The initial concentrations of notrate and total volatile solids - GLP compliance:
- no
- Test type:
- laboratory
- Specific details on test material used for the study:
- Soil samples were collected in Texas, US, next to the cities of McGregor and Karnack at 5 different locations.
- Oxygen conditions:
- anaerobic
- Initial conc.:
- 5 ppm
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Key result
- DT50:
- >= 1.4 - <= 5 d
- Type:
- (pseudo-)first order (= half-life)
- Temp.:
- 22 °C
- Remarks on result:
- other: The test bottles were incubated at room temperature. As not precisely stated, a temperature of 22 °C is assumed.
- Transformation products:
- not measured
- Conclusions:
- The substance can regarded to be degradated of at least 75 % within 10 days based on a half-life time of maximum 5 days.
Reference
Description of key information
The substance can regarded to be degradated of at least 75 % within 10 days based on a half-life time of maximum 5 days.
Key value for chemical safety assessment
- Half-life in soil:
- 5 d
- at the temperature of:
- 22 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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