Registration Dossier
Registration Dossier
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EC number: 273-836-9 | CAS number: 69029-97-6
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
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Principles of method if other than guideline:
- thermogravimetry/Differential Scanning calorimetry method -congruent with EU-A.1,1.4.4.1 and 1.4.4.2
- GLP compliance:
- no
- Remarks:
- other Quality Assurance
- Type of method:
- thermal analysis
Test material
- Reference substance name:
- Speiss, copper
- EC Number:
- 273-836-9
- EC Name:
- Speiss, copper
- Cas Number:
- 69029-97-6
- IUPAC Name:
- Speiss, copper
- Details on test material:
- B7, sample description: Speiss, representative (grinded, homogenised & sieved), sample code: BM_B7_2008, lab code: 09TT02684
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- 403 °C
Any other information on results incl. tables
The diagram of TG/DSC test in nitrogen atmosphere: The first endothermic peak in the curve is at the temperature range 403 – 441 °C, the second at the temperature range 560 – 579 °C and the third at the temperature range 679 – 713 °C. These peaks indicate that some compounds start to melt. As and Sb decreases melting point, for instance algordite (Cu, As) starts to melt at temperature 688 °C. The one exothermic peak is at the temperature range 779 – 849°C and the second at the temperature range 1177 – 1197 °C. These peaks indicate reactions with nitrogen. Still one endothermic peak in the curve is at the temperature range 1010 – 1065 °C. The mass of the sample starts to decrease at the temperature range 779 °C which indicates, that some compounds start to decompose and evaporate.
Applicant's summary and conclusion
- Conclusions:
- Good quality study. Copper speiss was melting in the range of 403 -441 °C (Nitrogen atm)
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