Registration Dossier
Registration Dossier
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EC number: 701-229-5 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- 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
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- not specified
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- >= 593 - <= 672 °C
- Atm. press.:
- 1 atm
- Decomposition:
- yes
- Decomp. temp.:
- >= 727 - <= 740 °C
- Sublimation:
- yes
- Remarks:
- evaporation
- Subl. temp.:
- >= 864 - <= 904 °C
- Remarks on result:
- other: results obtained in nitrogen atmosphere
- Melting / freezing pt.:
- >= 932 - <= 959 °C
- Atm. press.:
- 1 atm
- Decomposition:
- yes
- Decomp. temp.:
- ca. 650 °C
- Sublimation:
- no
- Remarks on result:
- other: results obtained in air conditions
- Conclusions:
- test done according to standard protocol, useful to assess the characteristic of the substance
- Executive summary:
The melting point of the substance was determined by thermo gravimetrical (TGA) measurements.
Melting of cadmium sulfoselenide starts at 593oC in nitrogen atmosphere and oxidation at 555oC.
Reference
During the melting test of the studied cadmium sulphoselenide sample in nitrogen atmosphere, the endothermic peaks in the curve are at the temperature ranges 593 – 672 °C, 727 – 740 °C and 864 – 904 °C. The first peak indicates melting, because the mass of the sample does not change. The other peaks indicate decomposition and evaporation, because the mass of the sample starts to decrease.
In the oxidation test of the studied cadmium sulphoselenide sample using air atmosphere, the exothermic peaks in the curve are at the temperature ranges 555 – 664 °C, 691 – 727 °C and 792 – 817 °C. They indicate oxidation, the first peak may indicate sulphatizing, because the mass of the sample increases at the same time. The mass of the sample start to decrease at the temperature ~650 °C and it indicates decomposition and evaporation.The endothermic peak at the temperature range 932 – 959 °C may indicate melting, because the mass decreasing stops.
Description of key information
Melting of cadmium sulfoselenide starts at 593°C in nitrogen atmosphere and oxidation at 555°C (Outotec, 2010).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 555 °C
Additional information
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