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EC number: 202-903-7 | CAS number: 100-94-7
- 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
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- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- Dibenzyldimethylammonium chloride
- EC Number:
- 202-903-7
- EC Name:
- Dibenzyldimethylammonium chloride
- Cas Number:
- 100-94-7
- Molecular formula:
- C16H20N.Cl
- IUPAC Name:
- dibenzyldimethylammonium chloride
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- 91 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: shows amorphous behavior
Any other information on results incl. tables
Results in detail
Melting temperature
The test item had a melting range starting at about 50 °C ranging up to 95 °C with a pronounced peak at 91 °C in the 1st heating after drying at 75 °C for 30 minutes.
Determination |
Onset temperature [°C] |
Peak temperature [°C] |
End temperature [°C] |
5 |
~ 50 |
91.6 |
94.5 |
6 |
~ 50 |
91.1 |
94.6 |
Mean value |
~ 50 |
91 |
95 |
Observed thermal processes
Besides the pronounced peak at 91 °C in the 1st heating there was a small peak at about 65 °C, which is probably the result of the drying step. The melting process was visually verified by monitoring the test item within a melting point capillary tube.
In the pretests it was observed that during cooling down to -50 °C the test item did not recrystallize. In the 2nd heating the test item did no longer exhibit any pronounced endothermal signals in the range >30 °C, meaning melting processes were no longer observed.
A previous TG/DSC-Test (non-GLP) was run up to 600 °C to survey the thermal behavior of the test item. This test showed a decreasing TG-signal, starting at about 60 °C with a steep decrease starting at about 174 °C and reaching total weight loss at 273 °C. The weight loss was accompanied by an endothermal signal
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Pretests
Discussion
The DSC-measurement Test 1 was performed as an overview of the thermal behavior, showing the beginning decomposition of the test item starting at about 155 °C. The measurement showed a
broad exothermal peak with a maximum at 95 °C.
The DSC curve in Test 2 was recorded with a lower heating rate and exhibited a broad exothermal signal with two peak maxima at 73 °C and 92 °C. Because of the broad shape, especially of the first peak, we suspected it tobe residual water. To remove the residual water a 30-minute drying step at 60 °C was performed in Test 3.
This led to a broad melting peak with only one maximum at 91 °C.
In the resulting 1st heating curve of Test 4 again two peak maxima at 71 °C and 92 °C are visible. Afterwards a quick five-minute annealing step was performed at 94 °C, slightly above the peak maxima observed in the tests before.
In all the performed analyses the test item did no longer depict the same melting behavior in the 2nd heating after being melted during the 1st heating. During cooling down to -50 °C between the 1st and 2nd heating the test item did not recrystallize. We assume that it is no longer the original test item and is no longer in the same state as provided. Therefore, the DSC curves in the 2nd heating were not analyzed in detail.
Applicant's summary and conclusion
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