4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-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:

2002

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Acceptable, well-documented study report which mets 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:

260 °C

Remarks on result:

other: Weak self-heating at 260 °C due to thermal decomposition

Weak self-heating at 260 °C due to thermal decomposition was observed in the Grewer oven screening.

The hot storage test showed weak self-heating of 5 °C (Tmax: 205°C) within 48 min after temperature equalisation (which took 3 hours). Partial decomposition was observed (dark discoloration).

Conclusions:

The test substance shows weak self-heating in the Grewer oven at 260 °C and in the hot storage test at 200 °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 Grewer oven screening and a hot storage test.. The test substance shows weak self-heating in the Grewer oven at 260 °C and in the hot storage test at 200 °C.

Description of key information

Self-ignition of the test substance was determined by Grewer oven screening and a hot storage test.. The test substance shows weak self-heating in the Grewer oven at 260 °C and in the hot storage test at 200 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

200 °C