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EC number: 244-842-9 | CAS number: 22205-45-4
- 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
Stability: thermal, sunlight, metals
Administrative data
- Endpoint:
- stability: thermal, sunlight, metals, other
- Remarks:
- Migrated from section 'Stability: thermal, sunlight, metals'
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Well-reported study conducted in accordance with sound scientific principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
- Principles of method if other than guideline:
- With the differential scanning calorimetry (DSC) method, the heat flow between the (filled) sample crucible and a reference crucible (filled with an inert material or left empty) is measured as a function of the oven temperature and of time. From the recorded heat-flow/time signal the enthalpy of the decomposition reaction (endothermic or exothermic) can be determined. The so-called onset temperature marks the beginning of a thermal effect under the chosen heating conditions. In order to find the onset temperature using the DSC software the program uses a tangent on the steepest slope of a peak (thermal effect) which determines the onset temperature by the resulting osculation point to the extrapolated base line. During a test the sample is enclosed in a hermetically sealed stainless steel crucible (high pressure type). The crucible is filled with the sample in a nitrogen atmosphere. DSC apparatus Type 131 (SETARAM) was used for the tests. Each test run was conducted with a heating rate of 5 K/min between 30 °C and 500 °C using hermetically sealed gilded stainless steel crucibles to avoid evaporation. Uncertainty of results at the chosen rate of 5 K/min (obtained from runs with calibration substances): Enthalpy ± 5 %, Temperature ± 2 K.
- GLP compliance:
- no
Test material
- Reference substance name:
- Dicopper sulphide
- EC Number:
- 244-842-9
- EC Name:
- Dicopper sulphide
- Cas Number:
- 22205-45-4
- Molecular formula:
- Cu2S
- IUPAC Name:
- Copper(I) sulphide
- Details on test material:
- - Name of test material (as cited in study report): Copper (I) sulfide.
- Test material purity: Not given.
- Lot/batch No.: Shelflife 2011-07.
Constituent 1
Results and discussion
Any other information on results incl. tables
Under the given test conditions a first exothermic reaction could be seen at about 130 °C. The reaction enthalpy was −70.9 J/g. A second exothermic reaction, which nearly directly followed the first reaction, was observed at about 355 °C. The enthalpy of this reaction was −49.2 J/g. In the case of nearly consecutive exothermic reactions the enthalpy sum of both reactions should be considered in a worst case scenario. The enthalpy sum is −120.1 J/g.
Applicant's summary and conclusion
- Conclusions:
- The DSC test showed a decomposition energy of <−300 J/g (exotherm). Copper (I) sulfide is therefore considered to be thermally stable.
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