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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012-07-10
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
Regulation (EC) No 440/2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: EU Method A.2 (Boiling Temperature)
Version / remarks:
Regulation (EC) No 440/2008
Deviations:
no
GLP compliance:
no
Type of method:
thermal analysis
Remarks:
Differential scanning calorimetry (DSC)
Key result
Melting / freezing pt.:
> 310 °C
Decomposition:
no
Decomp. temp.:
> 310 °C
Sublimation:
no
Remarks on result:
other: No departure from the base line of the heat flow record was observed that might indicate a melting or decomposition process while the substance was heated up to a temperature of 310°C (583 K).
Conclusions:
Melting point > 310°C
Executive summary:

The melting point of substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" was measured in a study according to EU Methods A.1 (Melting / Freezing Temperature) and A.2 (Boiling Temperature) Regulation (EC) No. 440/2008. Differential scanning calorimetry (DSC) as thermal analysis method was used. According to ECHA REACH TGD R.7a, this method can be used to evaluate melting and boiling point in a single test. No departure from the base line of the heat flow record was observed that might indicate a melting, boiling or decomposition process while the substance was heated up to and including a temperature of 310°C (583 K).

Melting point > 310°C

Description of key information

> 583 K (310°C) 
EU Methods A.1 (Melting / Freezing Temperature) and A.2 (Boiling Temperature) Regulation (EC) No. 440/2008. Differential scanning calorimetry (DSC) as thermal analysis method was used.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
310 °C

Additional information

The melting point of substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" was measured in a study according to EU Methods A.1 (Melting / Freezing Temperature) and A.2 (Boiling Temperature) Regulation (EC) No. 440/2008. Differential scanning calorimetry (DSC) as thermal analysis method was used. According to ECHA Guidance R.7a, subchapter R.7.1.3.3 (2017), this method can be used to evaluate melting and boiling point in a single test.

No departure from the base line of the heat flow record was observed that might indicate a melting, boiling or decomposition process while the substance was heated up to and including a temperature of 310°C (583 K). Thus, melting point is > 583K (310°C).

To fill information on melting point into Chesar via IUCLID, the value of 310°C has been allocated as key value.