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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:
From 15 May 2012 to 01 June 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Remarks:
Determination of the manganese violet’s melting point by thermo gravimetric/differential thermal analysis (TG-DTA).
Principles of method if other than guideline:
Determination of the manganese violet’s melting point by thermo gravimetric/differential thermal analysis (TG-DTA).
GLP compliance:
no
Type of method:
thermal analysis
Key result
Decomposition:
yes
Decomp. temp.:
ca. 426.85 °C

Manganese violet pigments are destroyed near 700 K (426.85 ºC) by release of NH3 and H2O.

However, there is no melting in the temperature range RT – 1073 K.

Conclusions:
Manganese violet pigments are destroyed near 700 K (426.85 ºC) by release of NH3 and H2O.
However, there is no melting in the temperature range RT – 1073 K.
Executive summary:

Determination of the manganese violet’s melting point by thermo gravimetric/differential thermal analysis (TG-DTA).

Manganese violet pigments are destroyed near 700 K (426.85 ºC) by release of NH3 and H2O.

However, there is no melting in the temperature range RT – 1073 K.

Description of key information

Key study: Determination of the manganese violet’s melting point by thermo gravimetric/differential thermal analysis (TG-DTA).

Manganese violet pigments are destroyed near 700 K (426.85 ºC) by release of NH3 and H2O.

However, there is no melting in the temperature range RT – 1073 K.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
1 073 K

Additional information