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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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:
other: GLP Compliant, guideline study, available as unpublished report, acceptable with restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Platinum dioxide
EC Number:
215-223-0
EC Name:
Platinum dioxide
Cas Number:
1314-15-4
Molecular formula:
O2Pt
IUPAC Name:
Platinum dioxide
Constituent 2
Reference substance name:
Platinium dioxide
IUPAC Name:
Platinium dioxide
Test material form:
not specified
Details on test material:
- Physical description: Black solid
- purity: 81.17% (as Platinum)
- Batch Number: 7024/00-09
- Storage and handling: stored at room temperature in the dark

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
> 450 °C

Any other information on results incl. tables

Test item supplied as hydrated solid. It did not change in appearance over the course of the testing. Authors concluded that the wide endotherm observed at approximately 25 to 120 °C was most likely due to losses of water of crystallisation. Melting temperature point of Platinum dioxide (hydrated solid) has been determined to be greater than 450 °C.

Applicant's summary and conclusion

Conclusions:
The melting temperature of platinum dioxide (hydrated solid) has been determined to be greater than 450 °C.
Executive summary:

This is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint. The melting temperature of platinum dioxide (hydrated solid) has been determined to be greater than 450 °C.