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Diss Factsheets
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EC number: 201-126-0 | CAS number: 78-59-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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
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.
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.