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Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11th February 2019 - 3rd April 2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
July 27, 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
August 1996
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
March 04, 2016
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
2,9,16,23-tetrakis(2,5-di-tert-butyl-4-methoxyphenoxy)phthalocyanine
EC Number:
831-167-5
Cas Number:
2126827-44-7
Molecular formula:
C92H106N8O8
IUPAC Name:
2,9,16,23-tetrakis(2,5-di-tert-butyl-4-methoxyphenoxy)phthalocyanine
Test material form:
solid
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
Authentix, 2715/18/01
- Expiration date of the lot/batch: 01 July 2020
- Purity test date:
11 July 2018

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
At room temperature protcted from light
- Stability under test conditions: Stable

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
325 °C
Remarks on result:
not determinable
Remarks:
The substance decomposed at 325 degC, before melting occured.

Any other information on results incl. tables

Preliminary test:

Starting at 425°C, the weight of the sample decreased significantly. At 454°C, the sample weight had decreased by 25%. After the experiment, a black charred expanded residue remained in the sample container (original colour:dark green) and a black charred residue was observed on the lid of the sample container. The change of the colour indicated reaction and/or decomposition of the substance.

Main study.

A broad endothermic effect was observed between 100°C and 300°C directly followed by an endothermic effect starting at 325°C. Based on the effect between 100°C and 300°C and the 1% weight loss during the preliminary test at the same temperatures, the first endothermic effect was most likely obtained due to the evaporation of a small part of the substance. The second endothermic effect was probably obtained due to reaction and/or decomposition of the substance. After the experiment, a dark blue/black molten residue remained in the sample container (original colour: dark green). The change of the colour indicated reaction and/or decomposition of the substance.

Applicant's summary and conclusion

Conclusions:
Melting of the substance was not observed below the temperature at which reaction and/or decomposition started (325 degC). Based on this, the substance has no melting temperature.
Executive summary:

The melting temperature has been tested employing differential scanning calorimetry (DSC) according to OECD method 102, EC Guideline A.1, and OPPTS 830.7200. Reaction and/or decomposition of the substance was observed during DSC experiment starting at 325°C (598K). Melting of the substance was not observed below the temperature at which reaction and/or decomposition started. Based on this, the substance has no melting temperature.