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EC number: 266-966-2 | CAS number: 67711-90-4 Solids recovered from exhaust gas streams found in furnaces, flues and settling chambers as a result of roasting, smelting and converting operations. Constituents found as end products are dependent upon the materials used during various operations.
- 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:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No GLP study but other quality assurance
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- no
- Remarks:
- other quality assurance
- Type of method:
- thermal analysis
Test material
- Reference substance name:
- Flue dust, copper-refining
- EC Number:
- 266-966-2
- EC Name:
- Flue dust, copper-refining
- Cas Number:
- 67711-90-4
- IUPAC Name:
- flue dust, copper refining
- Details on test material:
- Sample collection made according to ECI/REACH Copper Consortium Standards Protocols (see IUCLID section 1.4)
The studied flue dust samples are fine- grained, the D50 value is for all samples below 20µm. They contain 9.18- 51.0% lead, 0.52- 9.58% copper, 6.3- 43.9% zinc, 0.09- 2.8% arsenic, and 1.15- 14.7% sulfur (see iuclid 4.23)
B11 flue dust from Secondary smelters (representative), sample code: MC_B11_522_xxx_0904, lab code: 09TT03192
B11 flue dust from primary smelter (blast furnace) (dried filtered slime, homogenized), sample code: KGHM_B11_006_0904, lab code: 09TT03514
B11 flue dust from primary smelter (electric furnace) (composite, from one silo), sample code: KGHM_B11_005_0904, lab code: 09TT03513
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- 100 - 170 °C
Any other information on results incl. tables
Table6:Melting
Sample |
Flue dust |
Flue dust |
Flue dust |
Sample |
B11 |
B11 |
B11 |
Outotec code |
09TT03192 |
09TT03513 |
09TT03514 |
First endothermic peak |
139 - 175 °C |
100 - 123 °C |
869 - 1017 °C |
Decomposition and/or melting starts |
139 °C |
100 °C |
170 °C |
During the melting tests of the three (3) flue dust samples were heated in Al2O3crucible using nitrogen atmosphere.
09TT03192
The endothermic peaks in the curve are at the temperature ranges 139 – 175 °C, 748 – 760 °C, 1202 – 1236 °C, 1304 – 1323 °C and 1470 – 1482 °C. The mass of the sample decreases at the temperature range 139 – 175 °C, again at ~ 400 – 780 °C and then > 1000 °C. These phenomena indicate, that some components of the sample start to decompose (for instance chloride - hydrate) and to melt (for instance zinc chloride hydrate) already at e temperature range 139 - 175 °C.
09TT03513
The endothermic peaks in the curve are at the temperature ranges 100 – 123 °C, 259 – 308 °C, 620 – 695 °C, 742 – 835 °C and 913 – 1031 °C. The mass of the sample starts to decrease at the temperature ~800 °C. First peaks indicate that sample has been a bit wet or/and hydrated. Next peaks indicate decomposition and the last peaks melting and evaporation.
09TT03514
The endothermic peaks in the curve are at the temperature ranges 869 – 1017 °C and 1034 – 1194 °C. The mass of the sample decreases at the temperature range ~170 – 320 °C and strongly at 869 – 1017 °C together with the first peak. These phenomena indicate, that some components decompose and evaporate before melting, which starts at the temperature range 1034 – 1194 °C. The main components of this dust sample are PbS (melting point 1118 °C), ZnS (melting point 1185 °C) and carbon.
Applicant's summary and conclusion
- Executive summary:
Based on the TG/DSC measurements, the decomposition and melting of the hydrate-containing flue dusts 09TT03192 and 09TT03513 start at 139oC and 100°C while for the other sample 09TT03514 the decomposition starts at 150oC.
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