Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2004-07-02 to 2004-11-25
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005
Report Date:
2005

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point/Boiling Range)
Version / remarks:
The determination was carried out by differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86, Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.
The calculation was performed using an adaptation of the Stein and Brown Method (MPBP for Windows version 1.41, © 2000 U.S. Environmental Protection Agency).
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder

Results and discussion

Boiling point
Key result
Atm. press.:
101.17 kPa
Decomposition:
yes
Remarks:
decomposed over the range of approximately 441 to 483K.
Decomp. temp.:
>= 441 - <= 483 K
Remarks on result:
other:
Remarks:
As the test material decomposed, no value for the boiling temperature could be determined experimentally. However, using an adaptation of the Stein and Brown method (MPBP for Windows version 1.41, © 2000 U.S. Environmental Protection Agency), the boiling temperature was calculated to be 285°C (558 K).

Any other information on results incl. tables

Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicates that the observed decomposition in both determinations is probably thermal and not oxidative.

The decomposition observed in the thermograms was confirmed by a visual estimation, using a modified Siwoloboff apparatus. After melting, the test material began to gradually darken in colour (from a clear liquid to a dark brown gel, then finally a black solid) over the range of 163 to 218°C.

Applicant's summary and conclusion

Conclusions:
The test material has been determined to decompose from approximately 441 to 483 K (167.7 to 207.1 °C) at 101.17 kPa. As the test material decomposed, no value for boiling temperature could be determined. A calculated value of boiling temperature gave a result of 558 K (285 °C).