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Physical & Chemical properties

Melting point / freezing point

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Reference
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:
test procedure in accordance with national standard methods with acceptable restrictions
Remarks:
Only one measurement was made during the DTA.
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
other: DIN 51004:1994 determination of melting temperatures of cristalline materials using Differential thermal analysis
Deviations:
no
Qualifier:
according to
Guideline:
other: DIN 51007:1994 General principles of differential thermal analysis
Deviations:
no
GLP compliance:
no
Type of method:
thermal analysis
Key result
Decomposition:
yes
Decomp. temp.:
ca. 949 °C
Remarks on result:
other: Onset 911°C

The sample shows a thermal event located around 949 °C (Onset 911 °C) which is supposed to correspond to CdS sublimation*.

*NASAR, A., SHAMSUDDIN, M. An investigation of the thermodynamic properties of cadmium sulphide, Thermochímica Acta 197 (1992) 373 - 380.

Conclusions:
The decomposition temperature of zircon, cadmium yellow is about 949 °C (onset 911 °C).

Description of key information

The decomposition temperature of zircon, cadmium yellow is about 949 °C (onset 911 °C).

Key value for chemical safety assessment

Additional information