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Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Tungsten disilicide
EC Number:
234-909-0
EC Name:
Tungsten disilicide
Cas Number:
12039-88-2
Molecular formula:
Si2W
IUPAC Name:
tungsten disilicide
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Batch number: 171130

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> 430 °C
Atm. press.:
760 mm Hg
Decomposition:
no

Applicant's summary and conclusion

Conclusions:
The melting point of Tungsten disilicide is over 430 °C at 760 mm Hg.
Executive summary:

The melting point of tungsten disilicide was determined by Differential Scanning Calorimeter (DSC) method.

As there was no endothermic peak observed up to 430 °C when the test item was heated in presence of nitrogen, the melting point of the test item is considered to be > 430 °C at normal atmospheric pressure (760 mm Hg).

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