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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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EC number: 202-046-9 | CAS number: 91-17-8
- 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
![](https://echa.europa.eu./o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_environmental-fate-and-pathways.png)
Phototransformation in water
Administrative data
- Endpoint:
- phototransformation in water
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1991
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Indirect photolysis study in the presence of catalyzers. Reliable but not relevant for environmental fate assessment.
Data source
Reference
- Reference Type:
- publication
- Title:
- Mild oxidation of cyclic C6-C10 hydrocarbons in liquid phase at room temperature by heterogeneous photocatalysis
- Author:
- Herrmann JM, Mu W and Pichat P
- Year:
- 1 991
- Bibliographic source:
- Stud. Surf. Sci. Catal. 59, 405-412
Materials and methods
- Study type:
- indirect photolysis
- Principles of method if other than guideline:
- UV ilumination of TiO2 suspension
- GLP compliance:
- no
Test material
- Reference substance name:
- Decalin
- IUPAC Name:
- Decalin
- Details on test material:
- cis-decahydronaphthalene from Aldrich, trans-decahydronaphthalene of unknown origin. No data on purity. Employed as received
Constituent 1
Study design
- Radiolabelling:
- no
- Analytical method:
- gas chromatography
- Buffers:
- none
- Light source:
- other: mercury lamp
- Light spectrum: wavelength in nm:
- > 300
- Details on light source:
- Philips HPK 125 W mercury lamp, radiant flux measured with calibrated radiometer (United Technology, model 21 A)
Sensitiser (for indirect photolysis)
- Type of sensitiser:
- other: TiO2
- Details on sensitiser:
- suspended in 10 ml test material
- Details on test conditions:
- Apparatus: Cylindrical static slurry photoreactor of 90 cm3 with bottom optical window of approx. 4 cm in diameter transmitting wavelengths > 300 nm.
Temperature: Room temperature
- Reference substance:
- no
- Dark controls:
- no
Results and discussion
- Rate constant (for indirect photolysis):
- other: not measured
- Transformation products:
- yes
Identity of transformation productsopen allclose all
- No.:
- #1
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- 2-Decalone
- Identifier:
- common name
- Identity:
- 2-Decalone
- No.:
- #2
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- 1-Decalone
- Identifier:
- common name
- Identity:
- 1-Decalone
- No.:
- #3
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- 2-Decalol
- Identifier:
- common name
- Identity:
- 2-Decalol
- No.:
- #4
Reference
- Reference substance name:
- Unnamed
- Inventory number:
- InventoryMultipleMappingImpl [inventoryEntryValue=EC 204-696-9]
- Details on results:
- The cis isomer was found at least 10 times more reactive with a selectvitiy of 81 % in mild oxidation products and 19 % in CO2. The relative concentrations of the non-CO2 oxidation products were 86 (#1) : 7 (#2) : 7 (#3). The preferential attack at position 2 could be due to the steric mode of adsorption of cis-decahydronaphthalene at the TiO2 surface.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- Decahydronaphthalene was photodegraded in presence of TiO2 to 2-decalone (main product), 1-decalone and 2-decalol as well as some carbon dioxide. Half-life was not estimated. The cis isomer was at least 10 times more reactive than the trans isomer.
- Executive summary:
Decahydronaphthalene was photodegraded in presence of TiO2 to 2-decalone (main product), 1-decalone and 2-decalol as well as some carbon dioxide. Half-life was not estimated. The cis isomer was at least 10 times more reactive than the trans isomer
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.
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