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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
other: Database
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Information taken from factual databases and/or handbooks.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Not applicable: handbook and database data
Type of method:
other: no data
Melting / freezing pt.:
313 °C
Remarks on result:
other: claudetite
Melting / freezing pt.:
274 °C
Remarks on result:
other: arsenolite
Conclusions:
Arsenic trioxide, in the mineral form of claudetite, is cited to have a melting point of 313°C. In the mineral form of arsenolite, the melting point is cited to be 274°C.

Description of key information

Arsenic trioxide, in the mineral form of claudetite, is cited to have a melting point of 313°C. In the mineral form of arsenolite, the melting point is cited to be 274°C. 

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
313 °C

Additional information