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Diss Factsheets
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EC number: 939-512-2 | CAS number: 85681-55-6
- 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:
- 2004-08-23 to 2004-11-18
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Decomposition:
- yes
- Decomp. temp.:
- 163 - 175 °C
- Conclusions:
- Reaction or decomposition of the test material was observed above 163°C - 175°C. Complete melting or boiling of the test material was not observed below the temperature at which reaction or decomposition started. The observation of a small endothermic effect between about 65°C and 130°C and the coalescing of the powder particles indicate that possibly a small part of the test substance melted in the given temperature range. Below 65°C a small part of the test material evaporated (possibly volatile impurities).
No melting or boiling temperature could be determined for the test material. Reaction or decomposition started at 163°C - 175°C. - Executive summary:
In a melting/boiling point study performed in accordance with EC Method A1 and OECD Guideline No 102 using Differential Scanning Calorimetry (DSC) no melting or boiling temperature could be determined for the test material. Reaction or decomposition started at 163°C - 175°C.
Reference
Expt 1: Two small endothermic effects were observed: between 35°C and 67°C and between 67°C and 130°C. An exothermic effect started at about 175°C, probably caused by reaction or decomposition of the test substance. After the experiment, the sample had a light-yellow colour (original colour: white). The sample appearred to have not been molten, but the particles had coalesced. Weighing showed that the sample had lost 3% of its mass.
Expt 2: A small endothermic effect was observed between 35°C and 60°C. The DSC-curve recorded during the second run of the second experiment (25°C - 65°C) showed no heat effect. After the experiment, the consistency of the sample had not changed. The sample had lost 1% of its mass. It is very likely that the endothermic effect was caused by evaporation of a small part of the test substance, possibly volatile impurities.
Expt 3: Two small endothermic effects were observed: between 35°C and 61°C and between 61°C and 122°C. The DSC-curve that was recorded during the second run of the third experiment (25°C - 155°C) showed three small endothermic effects: between 48°C and 67°C, between 67°C and 82°C and between 93°C and 132°C. After the experiment the sample appeared not to have been molten, but the particles coalesced. The colour of the sample had not changed. The sample had lost 1% of its mass.
Expt 4: Two (small) endothermic effects were observed: between 38°C and 63°C and between 63°C and 125°C. An exothermic effect started at about 163°C, probably caused by reaction or decomposition of the test substance. After the experiment, the sample had a light-yellow colour. The sample appeared to have not been molten, but the particles had coalesced. The sample had lost 1% of its mass.
Description of key information
The substance decomposes without melting starting at 163°C - 175°C.
Key value for chemical safety assessment
Additional information
In a melting/boiling point study performed in accordance with EC Method A1 and OECD Guideline No 102 using Differential Scanning Calorimetry (DSC) no melting or boiling temperature could be determined for the test material. Reaction or decomposition started at 163°C - 175°C.
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