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Physical & Chemical properties

Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
other: handbook
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.
Guideline:
other: not mentioned
Principles of method if other than guideline:
Method followed unknown; data from handbook.
GLP compliance:
not specified
Melting / freezing pt.:
561 °C
Melting / freezing pt.:
834 K
Conclusions:
The CRC Handbook of Chemistry and Physics (80th ed.) mentions a melting temperature of 561°C for calcium nitrate (anhydrous).
Endpoint:
melting point/freezing point
Type of information:
other: handbook
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.
Guideline:
other: not mentioned
Principles of method if other than guideline:
method followed unknown, data from handbook
GLP compliance:
not specified
Melting / freezing pt.:
ca. 560 °C
Remarks on result:
other: anhydrous form
Melting / freezing pt.:
ca. 45 °C
Remarks on result:
other: tetrahydrate form
Conclusions:
The Merck Index (12th ed.) mentions a melting temperature of ca. 560°C for calcium nitrate (anhydrous) and of ca. 45 °C for calcium nitrate tetrahydrate.
Endpoint:
melting point/freezing point
Type of information:
other: handbook
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Remarks:
The preface and introduction to this book (9th Edition) provide no indication that the physico-chemical data has been ‘peer reviewed’. The reference source is not indicated leading to insufficient information on the material & method used.
Guideline:
other: not mentioned
Principles of method if other than guideline:
Method followed unknown; data from handbook.
GLP compliance:
not specified
Melting / freezing pt.:
561 °C
Remarks on result:
other: Anhydrous. Decomposes on heating
Melting / freezing pt.:
834 K
Conclusions:
Sax's Dangerous Properties of Industrial Materials (9th. ed.) mentions a melting temperature of 561°C for calcium nitrate (anhydrous).

Description of key information

Combining three handbook results, the melting temperature of calcium nitrate (anhydrous) is ca. 561°C.

The Merck Index (12th ed.) mentions a melting temperature of ca. 45°C for calcium nitrate tetrahydrate.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
561 °C

Additional information

Handbooks used:

-The CRC Handbook of Chemistry and Physics (80th ed.)

-The Merck Index (12th ed.)

-Sax's Dangerous Properties of Industrial Materials (9th. ed.)