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Physical & Chemical properties

Auto flammability

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Administrative data

Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study (VDI 2263).

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: VDI 2263

Test material

Constituent 1
Chemical structure
Reference substance name:
4-[(4-chloro-2-nitrophenyl)azo]-3-hydroxy-N-(2-methylphenyl)naphthalene-2-carboxamide
EC Number:
229-314-8
EC Name:
4-[(4-chloro-2-nitrophenyl)azo]-3-hydroxy-N-(2-methylphenyl)naphthalene-2-carboxamide
Cas Number:
6471-50-7
Molecular formula:
C24H17ClN4O4
IUPAC Name:
4-[(4-chloro-2-nitrophenyl)diazenyl]-3-hydroxy-N-(2-methylphenyl)-2-naphthamide

Results and discussion

Auto-ignition temperature (liquids / gases)
Auto-ignition temperature:
240 °C
Atm. press.:
ca. 1 013 hPa
Remarks on result:
other:
Relative self-ignition temperature (solids)
Relative self-ignition temperature:
240 °C
Remarks on result:
other:
Remarks:
at atm. press. of ca.1013.0 hPa

Any other information on results incl. tables

The pure sample showed self-heating starting from 240 °C (max. temp. ca 325 °C).

The pure sample showed intense swelling in the Grewer oven which significantly reduces the surface of the powder and its air oxidation and thus the self-ignition process.

The mixture with kieselguhr showed self-ignition starting from 260 °C with a temperature rise to above 650 °C due to an oxidation reaction of the test substance with kieselguhr. In the mixture of the test substance with the inert kieselguhr, the surface of the test substance is increased due to the swelling of the pure product.

Applicant's summary and conclusion

Conclusions:
The pure test substance showed self-heating starting from 240 °C. The test item is not a self-heating substance according to UN class 4.2 and GHS/CLP.
Executive summary:

Self-heating of the test substance was analysed by a screening test in the Grewer oven according to VDI 2263, sheet 1. The pure test substance showed self-heating starting from 240 °C. The test item is not a self-heating substance.

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