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Diss Factsheets
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EC number: 411-070-0 | CAS number: - KY-ET
- 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:
- November 5, 2001
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: This study has been performed according to OECD 102 (1995), EU Method A.1 (1992) and according to GLP principles. Limited information available to verify the composition of the used test substance.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- (1995)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- (1992)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Remarks:
- (differential scanning calorimetry (DSC))
Test material
- Reference substance name:
- A mixture of: 2,4 -bis(N'-(4-methylphenyl)ureido)toluene; 2,6 -bis(N'-(4-methylphenyl)ureido)toluene
- EC Number:
- 411-070-0
- EC Name:
- A mixture of: 2,4 -bis(N'-(4-methylphenyl)ureido)toluene; 2,6 -bis(N'-(4-methylphenyl)ureido)toluene
- Molecular formula:
- C23H24N4O2
- IUPAC Name:
- 3-(2-methyl-5-{[(4-methylphenyl)carbamoyl]amino}phenyl)-1-(4-methylphenyl)urea
- Details on test material:
- - Name of test material (as cited in study report): KY-ET
- Appearance: White powder
- Storage condition of test material: At room temperature in the dark
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- >= 283 - <= 285 °C
- Decomposition:
- yes
- Decomp. temp.:
- >= 322
- Remarks on result:
- other: Reaction and/or decomposition of the substance started immediately after melting
Any other information on results incl. tables
Experiment #1
A large endothermic effect was observed between about 225°C and 345°C. This effect was probably caused by melting of the test substance. The extrapolated onset temperature of the peak is 283°C and the peak maximum is at 304°C. The peak has a shoulder at the high temperature side at 324°C. An exothermic effect started at about 345°C. This effect was probably caused by reaction and/or decomposition of the test substance. After the experiment, the sample appeared to have been molten and had lost 1.44 mg (75%) of its mass. The residue was black (original colour: white).
Experiment #2
The large endothermic melting peak was observed between 233°C and 325°C. The extrapolated onset temperature of the peak is 285°C and the peak maximum is at 299°C. A shoulder at approx. 314°C was observed. After the experiment, the sample appeared to have been molten and had lost 1.50 mg (65%) of its mass. The residue had a light-brown colour (original colour: white).
Experiment #3
The endothermic melting peak was observed between 230°C and 322°C. The extrapolated onset temperature of the peak is 285°C and the peak maximum is at 298°C. The peak has a shoulder on the high temperature side (at 314°C). An exothermic effect was observed above about 322°C. After the experiment, the sample appeared to have been molten and had lost 1.69 mg (70%) of its mass. The residue had a dark-brown colour (original colour: white).
Applicant's summary and conclusion
- Conclusions:
- The melting temperature range of KY-ET was determined to be 283 - 285°C, determined by DSC in accordance with OECD 102 (1995), EU Method A.1 (1992) and according to GLP principles.
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