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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

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 for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
other: DIN 51004:1994 determination of melting temperatures of cristalline materials using Differential thermal analysis
Deviations:
no
Qualifier:
according to guideline
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 Zirconium zircon with encapsulated cadmium sulphide is about 949 °C (onset 911 °C).

Key value for chemical safety assessment

Additional information