N-(4-chloro-2,5-dimethoxyphenyl)-2-[[2,5-dimethoxy-4-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide

Melting point / freezing point

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

Test material information

Constituent 1

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-(phenylsulfamoyl)phenyl]diazenyl}-3-oxobutanamide

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.