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Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
other information
Study period:
October 2013
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: No guideline but a reliable method is use.

Data source

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

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
Differential scanning calorimetry (DSC)
GLP compliance:
no
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
Perhydroimidazo[4,5-d]imidazole-2,5-dione
EC Number:
207-821-5
EC Name:
Perhydroimidazo[4,5-d]imidazole-2,5-dione
Cas Number:
496-46-8
Molecular formula:
C4H6N4O2
IUPAC Name:
perhydroimidazo[4,5-d]imidazole-2,5-dione
Constituent 2
Reference substance name:
glycoluril
IUPAC Name:
glycoluril
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Melting / freezing point
Melting / freezing pt.:
ca. 272 - 275.8 °C
Decomposition:
yes
Decomp. temp.:
ca. 278.2 - 337 °C

Any other information on results incl. tables

Two phenomena are observed:

- an endothermic peak (melting point): peak from 266°C to 278.2°C (melting point at 272 -275.8°C)

- anexothermic peak (decomposition): from 278.2°C to 337°C.

Applicant's summary and conclusion

Conclusions:
The melting point of glycoluril is between 272°C and 275.8°C.
Executive summary:

The melting point of glycoluril was measured by a Differential scanning calorimetry (DSC) method. The result is between 272°C and 275.8°C.