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EC number: 212-266-7 | CAS number: 774-55-0
- 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
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 18 January 2018 - 09 February 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- 1-(5,6,7,8-tetrahydro-2-naphthyl)ethan-1-one
- EC Number:
- 212-266-7
- EC Name:
- 1-(5,6,7,8-tetrahydro-2-naphthyl)ethan-1-one
- Cas Number:
- 774-55-0
- Molecular formula:
- C12H14O
- IUPAC Name:
- 1-(5,6,7,8-tetrahydronaphthalen-2-yl)ethan-1-one
- Test material form:
- liquid
- Details on test material:
- Appearance: Colourless to pale yellow liquid
Constituent 1
- Specific details on test material used for the study:
- Physical appearance: colourless to pale yellow liquid
Storage conditions: at room temperature protected from light, container flushed with nitrogen.
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- < -20 °C
- Atm. press.:
- >= 1 003 - <= 1 027 hPa
- Decomposition:
- no
- Remarks on result:
- other: Glass transition point: -74.9°C. No melting/freezing point was determined between 25°C and -90°C.
Any other information on results incl. tables
TGA EXPERIMENT (PRELIMINARY TEST)
Significant decrease of weight from 225°C. 25% weight loss at 285°C and 70% weight loss at 305°C.
After the experiment it was observed that the test item was evaporated from the sample container.
DSC EXPERIMENT 1
During cooling, a glass transition was observed between -90°C and -70°C. During heating, a glass transition was observed between -90°C and -50°C. The inflection point of the glass transition was -74.884°C. An endothermic peak was observed between 200°C and 350°C. The extrapolated onset temperature of the peak was 299.150°C. The endothermic effect was most likely obtained due to boiling of the test item. After the experiment it was observed that the test item had evaporated from the sample container.
DSC EXPERIMENT 2
In order to investigate the endothermic peak, a higher heating rate of 50°C/minute was used in the Experiment 2. The extrapolated onset temperature was 302.285°C. The endothermic peak had not shifted significantly to higher temperatures. It demonstrated that boiling of the test item caused the endothermic effect. Since a higher heating rate was applied during this experiment, the extrapolated onset temperature was not used in the calculation of the boiling temperature. After the experiment it was observed that the test item had evaporated from the sample container.
DSC EXPERIMENT 3
Experiment 3 was performed as a duplicate of Experiment 1. Similar results as in Experiment 1 were obtained. The inflection point of the glass transition was -74.996°C. The extrapolated onset of the boiling peak was 299.920°C. After the experiment it was observed that the test item had evaporated from the sample container.
DATA HANDLING
The glass transition temperature was determined as the mean inflection point of Experiment 1 and Experiment 3.
Applicant's summary and conclusion
- Conclusions:
- A glass transition temperature of -74.9°C was determined. The substance has no melting/freezing temperature between 25°C and -90°C.
- Executive summary:
Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.
The liquid substance has no melting/freezing temperature between 25°C and -90°C. From duplicate measurements the mean glass transition temperature was determined to be -74.9°C.
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