Calcium bis[4-[[3-[[2-hydroxy-3-[[(4-methoxyphenyl)amino]carbonyl]-1-naphthyl]azo]-4-methylbenzoyl]amino]benzenesulphonate]

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 meets basic scientific principles.

Principles of method if other than guideline:

Grewer screening and hot storage test

Relative self-ignition temperature:

>= 220 °C

Remarks on result:

other:

Remarks:

at atm. press. of ca.1013.0 hPa

The sample showed self-heating starting from 220 °C (max. temp. ca 350 °C) in the Grewer oven.

The hot storage test revealed weak self-heating:

When stored at 180 °C, the sample reached a maximum temperature of 197 °C 2.1 h (126 min) after temperature equalisation (which occurred 5.3 h after the start of the test).

Conclusions:

The test substance showed self-heating starting from 220 °C in the Grewer oven. The test item is not a self-heating substance of UN class 4.2.

Executive summary:

Self-ignition of the test substance was investigated by Grewer oven screening and a hot storage test (1 L sample, 180 °C, 65 h). The Grewer oven screening showed self-heating at 220 °C. The hot storage test at 180 °C revealed weak self-heating of 17 °C. The test item is not a self-heating substance.

Description of key information

The test substance showed self-heating starting from 220 °C in the Grewer oven. The test item is not a self-heating substance of UN class 4.2.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

220 °C