Registration Dossier
Registration Dossier
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EC number: 201-126-0 | CAS number: 78-59-1
Phototransformation in water
Administrative data
- Endpoint:
- phototransformation in water
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Photocatalysed oxidation of toxic organics
- Author:
- Borup MB, Middlebrooks EJ
- Year:
- 1 987
- Bibliographic source:
- Water Sci. Technol. 19, 381-390
- Reference Type:
- secondary source
- Title:
- 3,5,5-trimethylcyclohex-2-enone (Isophorone)
- Author:
- OECD SIDS
- Year:
- 2 005
- Bibliographic source:
- OECD SIDS, CAS No. 78-59-1, March 2005
Materials and methods
- Study type:
- indirect photolysis
- Principles of method if other than guideline:
- UV irradiation induced decomposition of hydrogen peroxide followed by reaction of the resulting OH radicals with the test substance.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 3,5,5-trimethylcyclohex-2-enone
- EC Number:
- 201-126-0
- EC Name:
- 3,5,5-trimethylcyclohex-2-enone
- Cas Number:
- 78-59-1
- Molecular formula:
- C9H14O
- IUPAC Name:
- 3,5,5-trimethylcyclohex-2-enone
- Test material form:
- liquid
- Remarks:
- yellow
Constituent 1
Study design
- Light source:
- other: Low pressure mercury vapor lamp
- Light spectrum: wavelength in nm:
- ca. 254
Sensitiser (for indirect photolysis)
- Type of sensitiser:
- other: hydrogen peroxide
- Concentration of sensitiser:
- 250 mg/L
Duration of test at given test condition
- Initial conc. measured:
- 62 mg/L
Results and discussion
% Degradation
- Key result
- % Degr.:
- > 99.9
- Sampling time:
- 60 min
- Test condition:
- Indirect photolysis
- Transformation products:
- no
- Details on results:
- No degradation was observed in controls with H202 or UV irradiation alone, respectively. The rate constant varied with intensity of UV radiation. lt was first order with respect to H202 concentration and zero order with respect to isophorone concentration.
Applicant's summary and conclusion
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Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
