Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study (EU A.1) with acceptable restrictions.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Principles of method if other than guideline:
Differential scanning calorimetry
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
N-(4-chloro-2,5-dimethoxyphenyl)-2-[[2,5-dimethoxy-4-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide
EC Number:
235-427-3
EC Name:
N-(4-chloro-2,5-dimethoxyphenyl)-2-[[2,5-dimethoxy-4-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide
Cas Number:
12225-18-2
Molecular formula:
C26H27ClN4O8S
IUPAC Name:
N-(4-chloro-2,5-dimethoxyphenyl)-2-[[2,5-dimethoxy-4-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide

Results and discussion

Melting / freezing point
Melting / freezing pt.:
ca. 300 °C
Decomposition:
yes
Decomp. temp.:
ca. 321 °C

Any other information on results incl. tables

The product begins to melt at 300 °C, exothermic decomposition starts at 321°C (mean values from 2 measurements). Because of the overlap of endothermic and exothermic processes, the energy measured for the exothermic process (575 J/g, mean value from 2 measurements) is less than the true decomposition energy.

Applicant's summary and conclusion

Conclusions:
The product begins to melt at 300 °C (mean of 2 measurements).
Executive summary:

The thermal behaviour of the test substance was investigated by Differential Scanning Calorimetry (DSC). The test item melts under decomposition starting from ca. 300 °C.