Registration Dossier
Registration Dossier
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EC number: 208-859-5 | CAS number: 544-10-5
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study based on scientific principles, sufficiently documented;
Data source
Reference
- Reference Type:
- publication
- Title:
- Degradation of eighteen 1-monohaloalkanes by Arthrobacter sp. strain HA1.
- Author:
- Scholz, R. et al.
- Year:
- 1 987
- Bibliographic source:
- J. Gen. Microbiol., 133, 267-274
Materials and methods
- Principles of method if other than guideline:
- Method: Microbiological study following enrichment culture
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 1-chlorohexane
- EC Number:
- 208-859-5
- EC Name:
- 1-chlorohexane
- Cas Number:
- 544-10-5
- Molecular formula:
- C6H13Cl
- IUPAC Name:
- 1-chlorohexane
- Details on test material:
- putity >= 99 %
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Arthrobacter sp.
- Details on inoculum:
- The strain was isolated from adapted bioactive sludge of an industrial wastewater treatment plant and could use the test item as sole carbon source by releasing hydrogen chloride and forming 1–hexanol as intermediate.
- Duration of test (contact time):
- 40 h
Initial test substance concentrationopen allclose all
- Initial conc.:
- 200 mg/L
- Based on:
- test mat.
- Initial conc.:
- 1.7 mmol/L
- Based on:
- test mat.
Results and discussion
- Details on results:
- The strain was isolated from adapted bioactive sludge of an industrial wastewater treatment plant and could use the TS as sole carbon source by releasing hydrogen chloride and forming 1-hexanol as intermediate. The enzyme, halidohydrolase, is inducible. The concentration of inoculum was very low, less than 3 mg/l, expressed as protein content, at time 0.
Also a second strain, Ps. putida, was mentioned, having a similar degradation characteristic.
Any other information on results incl. tables
Can be biodegraded by adapted sewage treatment plant organisms.
Applicant's summary and conclusion
- Interpretation of results:
- other: biodegradable
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