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EC number: 273-794-1 | CAS number: 69029-48-7 Product from the pH-adjustment of indium-rich solutions causing the precipitation of indium, ammonium and cadmium hydroxides and sulfates and zinc sulfate.
- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Principles of method if other than guideline:
- Principle of the test method
In a measurement with differential scanning calorimetry (DSC) a sample of the test item and a reference material (identical crucible without the test item) are subjected to the same controlled temperature program. The difference in the temperatures of the test item and the reference material is recorded and applying a calibration function converted to a heat flow signal. When the sample undergoes a transition involving a change in enthalpy (endothermic on melting), that change is indicated by a departure from the base line of the heat flow record.
Thermogravimetry (TG) is based on continuous recording of mass changes of a sample as a function of temperature (with first derivative curve DTG).
Simultaneous Thermal Analysis (STA) generally refers to the simultaneous application of Thermogravimetry (TG) and Differential scanning calorimetry (DSC) to one and the same sample in a single instrument. The test conditions are perfectly identical for the TG and DSC signals (same atmosphere, gas flow rate, vapor pressure of the sample, heating rate, thermal contact to the sample crucible and sensor, radiation effect, etc.). The analyzability of the signals is improved, since two or more sets of information concerning sample behavior are always simultaneously available (differentiation between phase transformation and decomposition, between addition and condensation reactions, recognition of pyrolysis, oxidation, and combustion reactions, etc.). - GLP compliance:
- not specified
- Type of method:
- other: simultaneous thermal analysis - simultaneous appication of thermogravity and differential scanning calorimetry
Test material
- Reference substance name:
- Indium, cake
- EC Number:
- 273-794-1
- EC Name:
- Indium, cake
- Cas Number:
- 69029-48-7
- IUPAC Name:
- Insoluble indium-containing residue after precipitation of indium bearing solutions
- Test material form:
- other: solid pellet-like
- Details on test material:
- substance as put on the market
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- > 1 100 °C
- Atm. press.:
- 1 atm
- Decomposition:
- yes
- Sublimation:
- yes
- Remarks on result:
- other: No melting point was found up to 1100 °C The decomposition/sublimation of the sample starts with the beginning of heating.
Any other information on results incl. tables
The first two DSC measurements were combined with a thermogravimetric (TG) measurement.
Measurement 1:
The first STA measurement shows a decomposition/sublimation in several steps and in a very complex manner. Beginning at room temperature there is a permanent weight loss till ca. 1000 °C. Then there is a small increase in weight, caused by precipitation through sublimation. After cooling down the sample crucible as well as the reference crucible is covered with a grey precipitation. The residue is discoloured dark-grey, but still a powder, so there are no visible indications of melting. There are two endothermic peaks which can be assigned to phase changes, possibly partial melts. A very weak maximum at 127 °C (onset temperature: 125 °C) and a sharp peak with maximum at 663 °C (onset temperature: 659 °C).
Measurement 2:
The second STA measurement was stopped at 680 °C, directly after the sharp endothermic peak. Up to this temperature the curves show the same course as in the first measurement. After cooling down, the sample holder, the reference crucible as well as the sample crucible are covered with a red-brown precipitation. The residue is discoloured olive-green, but still a powder, so there are no visible indications of melting. There are two endothermic peaks which can be assigned to phase changes, possibly partial melts. A very weak maximum at 128 °C (onset temperature: 125 °C) and a sharp peak with maximum at 663 °C (onset temperature: 659 °C).
Measurement 3:
Because the first weak phase change is overlapped by the strong starting deflection of the STA apparatus, a pure DSC measurement is realized, to detect the reaction more precisely. The DSC curve shows a small but very sharp peak with an onset temperature at 125 °C and a maximum at 126 °C.
In summary:
Right from the beginning the sample shows decomposition and sublimation. Up to 1100 °C there is no unambiguous proof of melting, but the curves show two endothermic phase changes in varying degrees, which possibly refer to partial melt. Melting temperature: No melting point was found up to 1100 °C The decomposition/sublimation of the sample starts with the beginning of heating.
Phase changes: 125 °C (possibly partial melt), 659 °C (possibly partial melt)
Applicant's summary and conclusion
- Conclusions:
- study according to standard OECD protocol
- Executive summary:
Right from the beginning the sample shows decomposition and sublimation. Up to 1100 °C there is no unambiguous proof of melting, but the curves show two endothermic phase changes in varying degrees, which possibly refer to partial melt.
Melting temperature: No melting point was found up to 1100 °C, the decomposition/sublimation of the sample starts with the beginning of heating.
Phase changes: 125 °C (possibly partial melt), 659 °C (possibly partial melt)
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