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EC number: 211-820-5 | CAS number: 698-76-0
- 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:
- from 20 March 2018 to 24 April 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 20 March 2018 to 24 April 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- Version / remarks:
- 1996
- Deviations:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Boiling pt.:
- 259 °C
- Atm. press.:
- >= 996.6 - <= 998.8 hPa
- Remarks on result:
- other: mean of 2 measurements
- Conclusions:
- The boiling temperature of the substance was determined to be 259.0°C (at 998 ± 1 hPa).
- Executive summary:
The boiling temperature of the substance was determined using Differential Scanning Calorimetry in a GLP study according to EC A.2, OECD 103 and OPPTS 830.7220.
From duplicate experiments, the boiling temperature was determined to be 259.0°C (at 998 ± 1 hPa).
Three experiments were performed to investigate the melting and boiling behaviour of the substance.
DSC EXPERIMENT 1
During cooling, several exothermic peaks between -80°C and -60°C were found (due to crystallization of the test item). During heating, two endothermic peaks were observed between -50°C and 0°C. The two peaks partially overlapped and were ascribed to melting (see endpoint 4.2). Another endothermic peak was observed between 175°C and 275°C. The extrapolated onset temperature of the peak was 258.682°C. The endothermic effect was most likely caused by 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 boiling peak, a higher heating rate of 50°C/minute was used in the Experiment 2. The extrapolated onset temperature was 259.649°C. The endothermic peak had not shifted to higher temperatures. It demonstrated that boiling of the test item caused the endothermic effect. After the experiment it was observed that the test item had evaporated from the sample container. The extrapolated onset temperature was not used for calculation of the boiling temperature since it was obtained with a higher heating rate.
DSC EXPERIMENT 3
Experiment 3 was performed as a duplicate of Experiment 1. Similar results as in Experiment 1 were obtained. The extrapolated onset of the boiling peak was 259.312°C.
DATA HANDLING
The boiling temperature was determined as the mean extrapolated onset temperature of Experiment 1 (258.682°C) and Experiment 3 (259.312°C).
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:
- Tetrahydro-6-propyl-2H-pyran-2-one
- EC Number:
- 211-820-5
- EC Name:
- Tetrahydro-6-propyl-2H-pyran-2-one
- Cas Number:
- 698-76-0
- Molecular formula:
- C8H14O2
- IUPAC Name:
- tetrahydro-6-propyl-2H-pyran-2-one
- Test material form:
- liquid
- Details on test material:
- Appearance: Clear colourless to pale yellow liquid
Storage: In refrigerator (2-8°C)
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- >= -17 - <= -12.1 °C
- Atm. press.:
- >= 996.6 - <= 998.8 hPa
- Remarks on result:
- other: mean of 2 measurements
Any other information on results incl. tables
Three experiments were performed to investigate the melting and boiling behaviour of the substance.
DSC EXPERIMENT 1
During cooling, several exothermic peaks between -80°C and -60°C were found (due to crystallization of the test item). During heating, two endothermic peaks were observed between -50°C and 0°C. The two peaks partially overlapped. As a result, the extrapolated onset temperature of the first peak and the peak maximum of the second peak were determined. The extrapolated onset temperature of the first peak was -17.296°C. The peak maximum of the second peak was -12.284°C. These endothermic effects were due to melting of the test item. Another endothermic peak was observed between 175°C and 275°C and ascribed to boiling (see endpoint 4.3).
DSC EXPERIMENT 2
Investigation of the presumed boiling peak, see endpoint 4.3.
DSC EXPERIMENT 3
Experiment 3 was performed as a duplicate of Experiment 1. Similar results as in Experiment 1 were obtained. The extrapolated onset of the first melting peak was -16.715°C. The peak maximum of the second melting peak was -11.817°C.
DATA HANDLING
Since two effects were observed which were due to melting of the test item, and the two peaks partially overlapped, it was decided to report a melting range instead of a melting temperature.
The melting range was determined as the range between the mean melting temperature (onset temperature) of the first melting peak and the mean peak maximum of the second melting peak, as determined during Experiment 1 (-17.296°C (first peak) and -12.284°C (second peak)) and Experiment 3 (-16.715°C (first peak) and -11.817°C (second peak)).
Applicant's summary and conclusion
- Conclusions:
- The melting range of the substance was determined to be from -17.0 to -12.1°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.
During heating, two endothermic peaks were observed between -50°C and 0°C. Since both effects were due to melting of the test item, and because the two peaks partially overlapped, it was decided to report a melting range instead of a melting temperature.
The melting range of the substance was determined to be from -17.0 to -12.1°C.
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