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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: well performed study according to acknowledged standard

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: company SOP
Principles of method if other than guideline:
Differential scanning calorimetry (DSC)
GLP compliance:
no
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
EC Number:
257-055-0
EC Name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
Cas Number:
51202-86-9
Molecular formula:
C28H20N2O6
IUPAC Name:
2,2'-(1,4-phenylene)bis[4-(4-methoxybenzylidene)-1,3-oxazol-5(4H)-one]
Details on test material:
Purity: 98.4 % (w/w)

Results and discussion

Melting / freezing point
Melting / freezing pt.:
296 °C
Atm. press.:
ca. 1 atm
Decomposition:
yes
Decomp. temp.:
ca. 317 °C
Sublimation:
no

Any other information on results incl. tables

An exothermic decomposition starts at 317°C. Because of the overlap of endothermic and exothermic processes, the energy measured for the exothermic process (100 J/g) is less than the true decomposition energy. The sharp endothermic peak at 296°C is the melting point.

Applicant's summary and conclusion

Conclusions:
The melting point of the substance is 296°C:
Executive summary:

The melting point of the substance was determined by DSC and was found to be 296 °C.