Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2005
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP missing, but test in analogy to official guideline

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report date:
2001

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: national standard (VDI 2263)
Principles of method if other than guideline:
Differential Scanning Calorimetry (DSC)
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
3-hydroxy-N-(o-tolyl)-4-[(2,4,5-trichlorophenyl)azo]naphthalene-2-carboxamide
EC Number:
229-440-3
EC Name:
3-hydroxy-N-(o-tolyl)-4-[(2,4,5-trichlorophenyl)azo]naphthalene-2-carboxamide
Cas Number:
6535-46-2
Molecular formula:
C24H16Cl3N3O2
IUPAC Name:
3-hydroxy-N-(2-methylphenyl)-4-[(E)-2-(2,4,5-trichlorophenyl)diazen-1-yl]naphthalene-2-carboxamide

Results and discussion

Melting / freezing point
Atm. press.:
ca. 1 013
Decomposition:
yes
Decomp. temp.:
270 °C
Remarks on result:
other: decomposition with a mean energy of -300 J/g

Any other information on results incl. tables

Closed cup: The measurements showed an endothermic effect in the temperature range 260 - 270°C directly followed by a spontaneous exothermal decomposition in the temperature ranges 270 - 290°C with a decomposition energy of -170 J/g followed by a second exothermal decomposition in the temperature ranges 290 - 450°C with a decomposition energy of -300 J/g.

Open cup: A measurement showed an oxidation reaction starting at approximately 240°C. This oxidation reaction covers the thermal decomposition.

Applicant's summary and conclusion