Registration Dossier
Registration Dossier
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EC number: 273-744-9 | CAS number: 69012-45-9 By-product produced in the rolling of copper wire either in a conventional rod mill or a continuous cast rod mill. Consists of metallic copper, cuprous oxide and cupric oxide.
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:
- Scale (coating), copper
- EC Number:
- 273-744-9
- EC Name:
- Scale (coating), copper
- Cas Number:
- 69012-45-9
- IUPAC Name:
- scale (coating), copper
- Details on test material:
- Sample collection made according to ECI/REACH Copper Consortium Standards Protocols (see IUCLID section 1.4)
B10, Scale, slag-type material from Cu melting furnace, primary smelter (representative, homogenised), sample code: slag from melting furnace, lab code: 09TT03840
B10, Scale, slag-type material from Cu rolling mill (representative, homogenised), sample code: scale coating from rolling mill, lab code: 09TT03897
B10, scale, dross-type (site 2, fines, homogenized), lab code: 10TT01448
B10, scale, dross-type (site 2, particles, homogenized), lab code: 10TT01449
B10, scale, dross-type (site 3) , lab code: 10TT01635
B10, scale, dross-type (site 3), lab code: 10TT01565
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- 1 066 - 1 285 °C
Any other information on results incl. tables
During the melting test of the scale sample was heated in Al2O3crucible using nitrogen atmosphere. The endothermic peaks in the curve are at the temperature ranges 1066 – 1071 °C, 1220 – 1232 °C and 1279 – 1285 °C. The first peak indicates melting of metallic copper and the second peak indicates melting of cuprite. Together with cuprite melting also some decomposition or evaporating occurs, because the mass of the sample starts to decrease.
Table6: Melting
Sample |
Scale |
|
|
Sample |
B10 |
|
|
Outotec code |
09TT03897 |
|
|
First endothermic peak |
1066 - 1071 °C |
|
|
Decomposition and/or melting starts |
1066 °C |
|
|
Applicant's summary and conclusion
- Conclusions:
- Based on the TG/DSC measurement, the melting of the scale sample 09TT03897, starts at the temperature 1066 °C.
- Executive summary:
Based on the TG/DSC measurement, the melting of the representative scale (sample 09TT03897), starts at the temperature 1066oC.
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