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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
according to guideline
Guideline:
other: ISO 11357-3:2011
Version / remarks:
DSC Method : Plastics-differential scanning calorimetry (DSC). Part 3 :Determination of temperature enthalphy of melting and crystallization
Standard : ISO 11357-3 :2011
Deviations:
not specified
Principles of method if other than guideline:
DSC: Plastics-differential scanning calorimetry (DSC).
Equipment: TA Instruments DSC Q20, no EQ661
Temperature program: 20-320°C at 20°C/min.
Sample holders: Crucible of aluminium
Sample size: 9 ± 1 mg.
Atmosphere: Nitrogen
Ambient temperature: 23ºC
Relative humidity: 50%
GLP compliance:
no
Other quality assurance:
other: not specified
Type of method:
thermal analysis
Remarks:
additionally, the sample was analysed by capillary tube method.
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Lot Nr. 4145Z0514
- Purity test date: 2015-11-26
Key result
Decomposition:
yes
Decomp. temp.:
130 °C
Remarks on result:
other:
Remarks:
Glass transition temperature is 68.34 °C
Conclusions:
Based on results in this report: The substance decomposes before melting at 130ºC.
Executive summary:

Melting point of Magnesium glucoheptonate was analysed by plastics-differential scanning calorimetry (DSC) (Part 3 :Determination of temperature enthalphy of melting and crystallization according to standard method: ISO 11357-3 : 2011). Since the DSC melting curve had the tipical profile from a decomposition without melting, the sample was analized also by the technique Capillary tube melting point to corroborate this results by visual observation. A decomposition before melting have also been observed.

In conclusion, according to DSC methof glas transition temperature is 68.34 °C. Overall conclusion: the substance decomposes before melting at 130ºC.

Description of key information

The substance decomposes before melting at 130ºC.

Key value for chemical safety assessment

Additional information