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EC number: 608-477-2 | CAS number: 3041-16-5
- 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:
- 8 January 2018 - 29 November 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:
- 2019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- 1,4-dioxan-2-one
- EC Number:
- 608-477-2
- Cas Number:
- 3041-16-5
- Molecular formula:
- C4H6O3
- IUPAC Name:
- 1,4-dioxan-2-one
- Test material form:
- solid
- Details on test material:
- - Physical state: powder/solid
- Appearance: white powder
Constituent 1
- Specific details on test material used for the study:
- - Batch n°: 397451
- Expiration date: 07 July 2018
- Purity: 99.86 %
- Storage condition of test material: In refrigerator (2-8°C)
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- 28.2 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Remarks on result:
- other: A colourless molten residue remained after the preliminary and main tests to determine the melting temperature
Any other information on results incl. tables
Preliminary test
From the TGA curve it could be derived that the weight of the sample decreased significantly starting at 150°C. At 197°C the sample weight has decreased by 25%. After the experiment, a colourless molten residue remained in the sample container (original colour: white).
Main tests
In order to determine the melting more precisely, the DSC curve with a heating rate of 20°C/min was obtained and showed an endothermic peak between 0°C and 50°C. The extrapolated onset temperature of the peak was 28.172°C. The endothermic effect was most likely obtained due melting of the test item. A second endothermic peak was observed starting at 150°C. After the experiment, a colourless molten residue remained in the sample container (original colour: white).
To investigate the melting peak, Experiment 2 was stopped directly after the melting peak. The extrapolated onset temperature of the melting peak was 28.393°C. After the experiment, a colourless molten residue remained in the sample container which demonstrated that melting was the reason for the endothermic effect.
In order to investigate the second endothermic peak, Experiment 3 was stopped at a higher temperature. The extrapolated onset temperature of the melting peak was 28.061°C. An endothermic peak was observed between 50°C and 125°C. The endothermic effect was most likely obtained due to evaporation of moisture. Another endothermic peak was observed between 150°C and 250°C and the extrapolated onset temperature was 219.934°C. After the experiment it was observed that the test item had evaporated from the sample container. The second endothermic effect was most likely obtained due to boiling of the test item.
The last experiment (performed as duplicate determination of the boiling point) showed similar results as Experiment 1. The extrapolated onset of the melting peak was 28.026°C. The extrapolated onset of the boiling peak was 219.909°C. After the experiment it was observed that the test item had evaporated from the sample container.
Applicant's summary and conclusion
- Conclusions:
- The melting temperature of 1,4-dioxan-2-one (PDO monomer) was determined at 28.2°C (301.3K) by using DSC.
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