Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
06 Jun - 05 Aug 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
30 May, 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
adopted 27 July1995
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry

Test material

1
Chemical structure
Reference substance name:
(5Z)-5-(2-methylpropylidene)imidazolidine-2,4-dione
EC Number:
700-726-4
Cas Number:
1369499-44-4
Molecular formula:
C7H10N2O2
IUPAC Name:
(5Z)-5-(2-methylpropylidene)imidazolidine-2,4-dione
Test material form:
solid: particulate/powder

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
205 °C
Decomposition:
no

Any other information on results incl. tables

Thermal Stability (DSC measurement):

The DSC-measurements in closed glass crucibles in a closed high pressure crucibles with the test item showed two endothermic effect in the temperature range of 195 °C - 225 °C and 290 °C -330 °C, respectively.

Melting Point I Melting Range (DSC measurement):

Two measurements in aluminium crucibles with a hole showed an endothermal effect in the temperature range of 180 - 220 °C with an onset temperature of 205.14 °C and 204.89 °C, respectively.

An additional endothermal effect was observed in the temperature range of 270 - 365 °C. The onset temperature was derived from the intersection of the tangent line with the highest slope of the

endothermal peak with the baseline.

ldent-No.        Onset /°C       Temperature range / °C                            Crucible

33841              205.14                     180 to 220                            Aluminium with a hole

33911              204.89                     180 to 215                            Aluminium with a hole

The test item had melting point of 205.0 °C.

Applicant's summary and conclusion

Conclusions:
The test item has a melting point of 205 °C.