Registration Dossier

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.

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