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Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 3-25, 1998
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
Valid method according to company guideline/standard operating procedure

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998
Report date:
1998

Materials and methods

Principles of method if other than guideline:
Differential thermal analysis (DTA)
Type of method:
differential scanning calorimetry
Remarks:
DTA

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide]
EC Number:
228-787-8
EC Name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide]
Cas Number:
6358-85-6
Molecular formula:
C32H26Cl2N6O4
IUPAC Name:
2-[2-(3,3'-dichloro-4'-{2-[2-oxo-1-(phenylcarbamoyl)propyl]diazen-1-yl}-[1,1'-biphenyl]-4-yl)diazen-1-yl]-3-oxo-N-phenylbutanamide
Test material form:
solid: nanoform

Results and discussion

Melting / freezing point
Melting / freezing pt.:
306 °C
Decomposition:
yes
Decomp. temp.:
310 °C

Any other information on results incl. tables

The DTA shows an endothermal reaction with an onset at 306.15 °C (rounded value of 306°C taken as melting point) and a peak at 308.03 °C.

Decomposition starts from the melting substance. The (exothermal) decomposition reaction shows an onset at 309.77 °C (rounded value of 310 °C taken as decomposition temperature) and a peak at 318.56 °C, the decomposition energy was -580 J/g (mean from 2 measurements).

Applicant's summary and conclusion

Executive summary:

The DTA recorded a melting point of 308°C and decomposition from the melting substance at an onset temperature of 310 °C. The decomposition energy is 580 J/g (mean of 2 measurements).