Registration Dossier
Registration Dossier
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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.
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EC number: 270-208-6 | CAS number: 68412-74-8 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77366.
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:
- 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
- Remarks:
- Differential thermal analysis
- Key result
- Melting / freezing pt.:
- > 1 000 °C
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting point of cobalt zinc silicate blue phenacite is > 1000 °C.
Reference
The sample shows no significant thermal events from 25°C to 1000°C. This result is consistent with the fact that the pigment is considered a solid solution of Co2SiO4 and Zn2SiO4 (melting points 1345 °C and 1509 °C respectively)*, so its melting point is expected to be higher than the maximum temperature of the assay.
*Lide, D.R. CRC Handbook of Chemistry and Physics, 88th Edition.
Description of key information
The melting point of cobalt zinc silicate blue phenacite is > 1000 °C.
Key value for chemical safety assessment
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
