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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:
2016-06-15
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
not performed according to GLP
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: DIN 51004
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: DIN 51006
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
> 240 °C
Remarks on result:
not determinable
Remarks:
A melting point was not observed, but decomposition of the test substance was observed during a thermogravimetric analysis. The pressure during the test was not reported, however an atmospheric pressure can be assumed.

Differential scanning calorimetry (DSC) as well as thermo gravimetry (TGA) resulted in decomposition of the test sample above 240 °C before melting or boiling.

Residue of thermogravimetric analysis: 19.4%.

Conclusions:
Zinc dipropionate starts to decompose at a temperature > 240 °C. As the substance decomposes at > 240 °C before melting or boiling, neither a melting nor a boiling point could be determined.

Description of key information

Zinc dipropionate starts to decompose at a temperature > 240 °C. As the substance decomposes at > 240 °C before melting, no melting point could be determined.

Key value for chemical safety assessment

Additional information

Differential scanning calorimetry (DSC); according to regulation (EC) No. 440/2008, A.1 and DIN 51004 and thermo gravimetry (TGA), according to DIN 51006.