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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
23 Aug 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
according to standard operating procedure of testing institute

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Principles of method if other than guideline:
differential scanning calorimetry
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[2,4-dihydro-5-methyl-2-(p-tolyl)-3H-pyrazol-3-one]
EC Number:
239-898-6
EC Name:
4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[2,4-dihydro-5-methyl-2-(p-tolyl)-3H-pyrazol-3-one]
Cas Number:
15793-73-4
Molecular formula:
C34H28Cl2N8O2
IUPAC Name:
4,4'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[5-methyl-2-(4-methylphenyl)-2,4-dihydro-3H-pyrazol-3-one]
Test material form:
solid: nanoform

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
312 °C

Any other information on results incl. tables

the test substance decomposes at on onset of 312 °C (peak 338°C)

mean decomposition energy: 367 J/g (2 runs)

Applicant's summary and conclusion

Executive summary:

The thermal behaviour of the test substance was investigated by Differential Scanning Calorimetry (DSC). The test substance does not melt. Decomposition starts at an onset of 312 °C.