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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
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).