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Appearance / physical state / colour

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Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
November 04th, 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
adopted July 27, 1995
Principles of method if other than guideline:
The thermal behaviour of the test substance was investigated by the Differential Scanning Calorimetry assay.
GLP compliance:
no
Physical state at 20°C and 1013 hPa:
solid

During the first experiment, a first endothermic peak was observed between start temperature and 180 °C, probably caused by the water evaporation. The second endothermic peak was observed between 235 and 356 °C, caused by the thermal decomposition of the test substance. After the experiment the sample had lost 1.19 mg (44.07 %) of its mass and the residue had a black colour.

The second experiment confirmed that the peak at 180 °C was caused by the water evaporation: after the experiment the sample had lost 0.22 mg (7.36 %) of its mass and the aspect was not change.

Conclusions:
The substance is a solid at 20 °C and 1013 hPa.
Executive summary:

The thermal behaviour of the test substance was investigated by the Differential Scanning Calorimetry assay. The procedures used in the study were in accordance with OECD Test Guideline No. 102. 

During the first experiment, a first endothermic peak was observed between start temperature and 180 °C, probably caused by the water evaporation. The second endothermic peak was observed between 235 and 356 °C, caused by the thermal decomposition of the test substance. After the experiment the sample had lost 1.19 mg (44.07 %) of its mass and the residue had a black colour.

The second experiment confirmed that the peak at 180 °C was caused by the water evaporation: after the experiment the sample had lost 0.22 mg (7.36 %) of its mass and the aspect was not change.

 

Conclusion

The substance is a solid at 20 °C and 1013 hPa.

Endpoint:
appearance / physical state / colour
Type of information:
other: semi-qualitative assessment
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: all evaluations are based on information about specification (technical standard), experience in dealing with the substance and visual evaluation
Principles of method if other than guideline:
All evaluations are based on information about specification (technical standard), experience in dealing with the substance and visual evaluation.
GLP compliance:
no
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
powder
Colour:
Dark blue/purple
Substance type:
organic
Conclusions:
Dark blue/purple organic powder at 20 °C and 1013 hPa.
Executive summary:

All evaluations are based on information about specification (technical standard), experience in dealing with the substance and visual evaluation.

The substance is a dark blue/purple organic powder at 20 °C and 1013 hPa.

Description of key information

Dark blue/purple organic powder at 20 °C and 1013 hPa.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

semi-qualitative assessment