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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 24, 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Principles of method if other than guideline:
The substance was tested according to SOP-STR 028.
GLP compliance:
no
Type of method:
thermal analysis
Decomposition:
yes
Remarks on result:
other: The test item decomposes before melting or boiling.
Conclusions:
The test item decomposes before melting or boiling.
Executive summary:

The substance has been tested according to OECD 102. The test item decomposes before melting or boiling.

Description of key information

 The test item decomposes before melting or boiling.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
349.84 °C

Additional information

The Melting Point analysis was performed according to internationally accepted testing procedures, using the Differential Scanning Calorimetry method for the analysis. The substance between 25 and 170 °C releases solvent as shown on first endothermic peak, followed by decomposition before melting or boiling.

An estimated value with Mpbpwin v.1.43* using the following smile has been reported to perform the risk assessment:

 

[Na+].Nc1c2C(=O)c3ccccc3C(=O)c2c(Nc4ccccc4)cc1S(=O)(=O)[O-]

 

* Mpbpwin is an application contained in the EpiSuite 4.1, the suite of physical/chemical property and environmental fate estimation programs developed by the EPA’s Office of Pollution Prevention Toxics and Syracuse Research Corporation (SRC).