Registration Dossier
Registration Dossier
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EC number: 220-357-8 | CAS number: 2736-18-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- June to Sept 1997
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.9 (Biodegradation: Zahn-Wellens Test)
- GLP compliance:
- no
- Inoculum or test system:
- sewage, industrial (adaptation not specified)
- Initial conc.:
- ca. 100 other: ppm
- Based on:
- other: total N
- Parameter followed for biodegradation estimation:
- other: removal of total N
- Parameter:
- other: total N
- Value:
- ca. 30
- Remarks on result:
- other: Flow through
- Details on results:
- Elimination wasn't constant. Known hydrolysis is suspected to mediate with the result.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- Under test conditons an elemination rate of around 30% were observed. This elemination was unsteady.
- Executive summary:
A mixture of NHDT and CDHT (Chloro-dihydroxy-Triazine) was tested under flow through conditions.
about 100 ppm were fed and elimination of about 30% were observed.
A distinction between biodgradation and hydrolysis is not possible.
Reference
Description of key information
A mixture of NHDT and CDHT (Chloro-dihydroxy-Triazine) was tested under flow through conditions.
about 100 ppm were fed and elimination of about 30% were observed.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, not fulfilling specific criteria
Additional information
A mixture of NHDT and CDHT (Chloro-dihydroxy-Triazine) was tested under flow through conditions.
about 100 ppm were fed and elimination of about 30% were observed.
A distinction between biodgradation and hydrolysis is not possible.
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