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EC number: 949-957-4 | CAS number: -
- 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:
- 02.11.2018-27.02.2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- EC No. 440/2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 30 - < 260 °C
- Atm. press.:
- ca. 1 013.25 hPa
- Decomposition:
- no
- Remarks on result:
- other: many transitions and completely molten at 260°C
- Conclusions:
- The DSC measurements (25 - 500 °C) showed no clear melting point (onset). The test item had a broad melting range of approx. 30 - 260 °C.
- Executive summary:
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting point / melting range was determined by differential scanning calorimetry (DSC). The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. The DSC measurements (25 - 500 °C) showed no clear melting point (onset). The test item had a broad melting range of approx. 30 - 260 °C.
Reference
DSC Measurement
Two DSC measurements with a heating rate of 10 K/min showed an ambiguous course of the baseline with no clear melting point (onset) in the whole temperature range of the DSC measurement (25 - 500 °C).
Ident No. | Test item / mg | Starting temperature / °C | Final test temperature / °C | Temperature range (endothermal) / °C | Crucible | Observation after the measurement |
38320 | 12.24 | 25 | 500 | no sharp endothermal effects | Aluminium with a hole | Test item was an orange to brown solidified melt, mass loss: aprox. 1% |
38324 | 11.9 | 25 | 500 | no sharp endothermal effects | Aluminium with a hole | Test item was an orange to brown solidified melt, mass loss: aprox. 1% |
An additional measurement with the capillary method was performed in order to clarify the results of the DSC measurements.
Capillary tube in a metal block
Further measurements with the capillary method were performed to clarify the results of the DSC measurements. The filling height of the test item in the capillaries/tubes was approximately 5 mm. Measurement 1 and 2 were performed in a melting capillary using a high heating rate of 1 K/min. Measurement 3 was performed in a boiling point tube with a boiling point capillary using a heating rate of 10 K/min.
No. | Set Point / °C | Heating Rate / K/min | End point / °C | Remarks |
1 | 150 | 1 | 210 | 150 °C: test item is still a slightly yellow solid but appeared partially molten Approx.178 °C: test item appeared glassy (slightly turbid) Approx. 203 °C: test item appeared glassy and got more turbid |
2 | 140 | 1 | 210 | 140 °C: test item is still a slightly yellow solid but appeared partially molten Approx.175 °C: test item appeared glassy (slightly turbid) Approx. 192 °C: test item appeared glassy and got more turbid |
3 | 30 | 10 | 400 | 30 °C to 40 °C: slightly yellow solid test item started to melt very partially, boiling point capillary on the top of the sample Approx.176 °C: test item shrinks and appeared glassy (slightly turbid).Approx. 195 °C: test item appeared glassy and got more turbid. Approx. 210 °C: boiling point capillary starts to immerge into the test item. Approx. 222 °C: boiling point capillary is completely immerged into the test item, test item is a turbid liquid Approx. 260 °C: test item appeared clear and colourless up to 400 °C: test item appeared clear and slightly yellow |
Between 30 °C to 40 °C the test item started to melt partially. At approx. 175 °C to 178 °C the item got glassy with solid particles. During further heating the glassy
test item became liquid and the solid particles were completely molten at approx. 260 °C. Under consideration of the results of the DSC measurements and the capillary method it was assumed that the test item is a mainly amorphic solid with crystalline parts and therefore behaves glassy during heating up.
Description of key information
The test item had a broad melting range of approx. 30 - 260 °C.
Key value for chemical safety assessment
Additional information
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1.The melting point / melting range was determined by differential scanning calorimetry (DSC). The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. The DSC measurements (25 - 500 °C) showed no clear melting point (onset). The test item had a broad melting range of approx. 30 - 260 °C.
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