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Diss Factsheets
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EC number: 241-523-6 | CAS number: 17526-94-2
- 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
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- self-ignition of dust accumulation
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2003-01-14
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Dispersed dust: This test determines the ignition temperature of flammable dispersed dusty substances on hot surfaces. See section "any other information on materials and methods" for detailed description of the method.
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): TDI Uron
- Substance type: organic
- Physical state: solid - Key result
- Self-ignition temperature:
- >= 435 °C
- Conclusions:
- The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
- Executive summary:
The test determines the ignition temperature of a dispersed dusty test substance on hot surfaces. The test is conducted according to a test protocol. The surface area of the substance is increased intentionally in this test by preparing the test substance accordingly to simulate the dispersed dusty properties. The ignition temperature of dispersed dusty test material is expected to be significantly lower than the ignition temperature of the solid with larger particle diameters. The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
Reference
The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
Description of key information
Two tests for dusty TDI-Urone are available evaluating the auto-flammability on hot surface for deposited and dispersed
TDI-Urone with particle diameter of 0.25 mm. No auto-ignition of deposited TDI-Urone dust occurred on surfaces until 360°C.
The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
Key value for chemical safety assessment
Additional information
The test for deposited TDI-Urone (100 mg) was conducted for 5 min on a hot surface up to 360°C. No reaction was observed.
The test for dispersed TDI-Urone was conducted on a surface up to 600°C. The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
As the tests were conducted with smaller particle diameters due to grinding and sieving the tested dusty TDI-Urone is expected to react even more sensible with regard to auto-flammability as original TDI-Urone produced directly from the operating facilities. Therefore it is concluded that the self-ignition temperature of TDI-Urone is higher than 360°C. This temperature is higher than the melting point (approx. 185°C). Thus TDI-Urone melts before it is self-ignited.
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