N-[4-(acetylamino)phenyl]-4-[[5-(aminocarbonyl)-2-chlorophenyl]azo]-3-hydroxynaphthalene-2-carboxamide

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2004

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Acceptable, well-documented study report which meets basic scientific principles.

Principles of method if other than guideline:

Screening test according to Grewer and according to company guideline, similar to VDI 2263 sheet 1

Relative self-ignition temperature:

ca. 280 °C

Remarks on result:

other:

Remarks:

at atm. press. of ca.1013.0 hPa

Self-heating of the test item as delivered was observed at 280 °C (small temperature rise up to ca. 340 °C).

No other effects were observed.

The measurement of the mixture of the test item with kieselguhr (1:1) showed a weak exothermal reaction at 310 °C followed by a second strong oxidation reaction with a temperature rise up to ca. 820 °C.

Self-heating of the test substance occurs due to its decomposition.

It can be assumed that the product is liquefied by decomposition.

Thus, measuring the original sample, it presumably flowed out of the basket and no further reaction was observed.

In mixture with kieselguhr, the melt is collected and the following oxidation reaction is observed.

Conclusions:

The test substance shows weak self-heating at 280 °C. No classification as a self-heating substance class 4.2 of the transport regulations required.

Executive summary:

Self-ignition of the test substance was determined by heating a sample in the Grewer oven. The test substance shows weak self-heating at 280 °C.

Description of key information

The test substance shows weak self-heating at 280 °C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

280 °C