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Diss Factsheets
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EC number: 235-721-1 | CAS number: 12612-50-9
- 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:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2012-07-02
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.16 (Relative Self-Ignition Temperature for Solids)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- GLP inspection date: 29./30.Nov.2010
- Relative self-ignition temperature:
- 321 °C
- Remarks on result:
- other:
- Remarks:
- at atm. press. of ca.1.0 atm
- Conclusions:
- The reaction/oxidation behaviour of MoS2 has been studied extensively by researchers (see for example Risdon, 2003 and references therein). MoS2 can be oxidised to MoO3 in an exothermic reaction. The reaction requires a high activation energy. In industry this process is used to produce technical MoO3 from molybdenite ore (MoS2). This technical process takes place under controlled conditions in large multiple hearth furnaces at ca. 500-600 °C, to achieve complete oxidation. The self-ignition temperature is not a definitive value for a substance, as it is a function of several variables, such as particle size, surface area, way of confinement and sample amount. Under the conditions of the EU A.16 test, the self ignition temperature for a sample of MoS2 was determined at 321 °C.
Reference
At an oven temperature of 321 °C the temperature of the sample increased rapidly to over 400 °C resulting in the maximum temperature of 687 °C whereas the temperature of the oven rises constantly.
Description of key information
The relative self-ignition temperature of MoS2 is 312 °C.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 321 °C
Additional information
In an experimental study according to method EU A.16, the relative self-ignition temperature of a sample of MoS2 has been determined at 312 °C (Henke, 2012). The self-ignition temperature is not a definitive value for a substance, as it is a function of several variables, such as particle size, surface area, way of confinement and sample amount. Self-ignition of MoS2 does not occur under normal ambient conditions of handling, storage, transport or use.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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