Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
boiling point
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is a solid which decomposes before boiling
Justification for type of information:
JUSTIFICATION FOR DATA WAIVING
The substance has no melting point and decomposes before boiling.
Cross-reference
Reason / purpose for cross-reference:
reference to other study
Reference

2 tests were performed to determine the melting of the test item:

- one hot bar test

- one DSC with an open crucible

The substance has no melting point and starts decomposing at temperature > 220°C.

2 tests were performed to determine the melting of the test item:

- one hot bar test

- one DSC with an open crucible

In the DSC, the laboratory has concluded that the endothermic was either a melting or a relaxation phenomena.

An endothermic peak in a DSC heating curve, performed with a Mettler Toledo apparatus is a melting peak if:

- the sample weight does not decrease significantly over the course of the peak, and

- the sample appears to have visibly melted after the measurement, and

- the surface area of the peak is between about 120 Jg-1 to 170 Jg-1 for non-polyleric organic substances, and

- the half-width of the peak is significantly less than 10 K (i.e. 10°C).

The surface area of the peaks is low (-51.37 kJ/kg), which is < of the 120 kJ/kg cut off value.

No data is provided concerning the half-width of the peaks, but given the very wide peak width, the half-width of the peak is exceeds 10 K

I.e. the endothermic peak does not seems to be melting point.

Furthermore, in the hot bar test, no melting point was observed

Conclusion: The substance has no melting point and starts decomposing at temperature > 220°C.

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion