Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
explosiveness, other
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:
EPA OPPTS 830.6316 (Explodability)
Qualifier:
according to guideline
Guideline:
other: ASTM E 537-07
GLP compliance:
yes

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

Small-scale preliminary tests
Parameter:
other: behaviour under heating from 30 to 430 °C
Remarks on result:
other: No exothermic or endothermic peak was observed, when the test item was heated from 30 to 430 °C on a Differential Scanning Calorimeter (DSC).

Any other information on results incl. tables

The test item remained unaffected as there was no exothermic or endothermic peak observed, in all the three replications when the test item was heated from 30 to 430 °C on a Differential Scanning Calorimeter (DSC) in presence of nitrogen.

As there was no exothermic decomposition observed up to 430 °C, the test item is considered to be having “non- explosive nature”.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
Tungsten disilicide is not explosive.
Executive summary:

The test item remained unaffected as there was non exothermic or endothermic peak observed when the test item was heated from 30 to 430°C on a Differential Scanning Calorimeter (DSC) in presence of nitrogen.

As there was no exothermic decomposition observed up to 430 °C, the test item is considered as not explosive.