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EC number: 500-007-3 | CAS number: 9003-50-3
- 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
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 17 June 2016 to 13 September 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Study was conducted in accordance with OECD, EU, OECD, and US EPA test guidelines in an accredited GLP laboratory.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- July 27, 1995
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- May 31, 2008.
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- August 1996.
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Purity/composition correction factor: No correction factor required
Test item handling: No specific handling conditions required - Key result
- Melting / freezing pt.:
- < -80 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- ambiguous
- Remarks on result:
- other: colour change indicated reaction and/or decomposition
- Conclusions:
- The melting temperature of Hepteen Base® was determined to be < -80°C (< 193K) applying a storage experiment in the freezer.
- Executive summary:
A study was conducted to determine the melting point/range of Hepteen Base® using differential scanning calorimetry (DSC). Study was conducted in accordance with test guidelines in a GLP accredited laboratory:
European Community (EC), EC no. 440/2008, Part A: Methods for the Determination of Physico-Chemical Properties, Guideline A.1: “Melting/Freezing Temperature”, Official Journal of the European Union no. L142, May 31, 2008.
Organization for Economic Co-operation and Development (OECD), OECD Guidelines for the Testing of Chemicals no. 102: "Melting Point / Melting Range", July 27, 1995.
United States Environmental Protection Agency (EPA), Product Properties Test Guidelines no. OPPTS 830.7200: "Melting Point/Melting Range", March 1998.
In the preliminary experiment from 200°C upwards the weight of the sample decreased significantly. At 311°C the sample weight had decreased by 25%.
After the experiment, an orange/brown residue remained in the sample container (original colour: amber). The change of the colour indicated reaction and/or decomposition of the test item.
From the main experiment the melting temperature of Hepteen Base® was determined to be < -80°C (< 193K) applying a storage experiment in the freezer.
Reaction and/or decomposition of Hepteen Base® was observed during DSC experiments at temperatures of > 200°C (> 473K). Boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no boiling temperature.
Reference
Preliminary test
From 200°C upwards the weight of the sample decreased significantly. At 311°C the sample weight had decreased by 25%.
After the experiment, an orange/brown residue remained in the sample container (original colour: amber). The change of the colour indicated reaction and/or decomposition of the test item.
Main study
During cooling no effects were observed which were due to crystallization of the test. During heating no effects were observed which were due to melting or boiling of the test item. After the experiment, an orange/brown residue remained in the sample container.
A lower heating rate of 5°C/minute was applied in the Experiment 2 since the colour of the test item changed while no endothermic or exothermic decomposition effects were observed. An exothermic peak between 200°C and 300°C was observed. The effect was due to reaction and/or decomposition of the test item. After the experiment, a yellow residue remained in the sample container.
To further investigate the melting temperature of the test item, two subsamples of the test item were stored for 26 hours at -24.0 ± 0.6°C and at -81.0 ± 3.4°C respectively. It was observed after storage that the test item was a viscous liquid (-20°C freezer) and a very viscous liquid (-80°C freezer). According to this it was concluded that the melting temperature of the test item is < -80°C (< 193K).
Description of key information
The melting temperature of Hepteen Base® was determined to be < -80°C (< 193K) applying a storage experiment in the freezer.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -80 °C
Additional information
A study was conducted to determine the melting point/range of Hepteen Base® using differential scanning calorimetry (DSC). Study was conducted in accordance with test guidelines in a GLP accredited laboratory:
European Community (EC), EC no. 440/2008, Part A: Methods for the Determination of Physico-Chemical Properties, Guideline A.1: “Melting/Freezing Temperature”, Official Journal of the European Union no. L142, May 31, 2008.
Organization for Economic Co-operation and Development (OECD), OECD Guidelines for the Testing of Chemicals no. 102: "Melting Point / Melting Range", July 27, 1995.
United States Environmental Protection Agency (EPA), Product Properties Test Guidelines no. OPPTS 830.7200: "Melting Point/Melting Range", March 1998.
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