Reaction mass of Cobaltate(2-), [2-[[[4-hydroxy-3-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]sulfonyl]amino]benzoato(3-)][2-[[2-hydroxy-5-[(phenylamino)sulfonyl]phenyl]azo]-3-oxo-N-phenylbutanamidato(2-)]-, disodium and Cobaltate(3-), bis[2-[[[4-hydroxy-3-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]sulfonyl]amino]benzoato(3-)]-, trisodium and sodium bis[2-[[2-hydroxy-5-[(phenylamino)sulphonyl]phenyl]azo]-3-oxo-N-phenylbutyramidato(2-)]cobaltate(1-)

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:

February the 13th, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Qualifier:

according to guideline

Guideline:

other: VDI 2263 Sheet 1 Grewer Oven

Version / remarks:

1990

GLP compliance:

yes (incl. QA statement)

Relative self-ignition temperature:

205 - 365 °C

Remarks on result:

preliminary test

Relative self-ignition temperature:

205 - 410 °C

Remarks on result:

preliminary test

Remarks:

in mixture with Kieselguhr (1:1)

In the investigation of self-ignition in the Grewer Oven the pure test item showed a self-heating starting at 205 °C to a maximum temperature of 365 °C. After having cooled down to 270 °C, the pure test item underwent another self-heating to 375 °C which proceeded relatively slowly compared to the first self-heating. After the measurement a black powder remained in the basket.

The test item in mixture with Kieselguhr showed a self-heating starting at 205 °C to a maximum temperature of 410 °C. After having cooled down to 270 °C, the test item in mixture with Kieselguhr underwent another self-heating to 375 °C which proceeded relatively slowly compared to the first self-heating. After the measurement a grey powder remained in the basket.

Experiment	Onset self-ignition / °C	Maximum temperature / °C
Pure test item	205	365
Test item in mixture with Kieselguhr (1:1)	205	410

Conclusions:

Self-heating at atmospheric pressure starting at 205 °C.

Executive summary:

The self-heating potential of the substance was evaluated by an experiment conducted in accordance with VDI 2263 Sheet 1 Grewer Oven test method.

The pure test item indicated a self-heating at atmospheric pressure starting at a temperature of 205 °C, which led to a maximum temperature of 365 °C. In mixture with Kieselguhr, the test item indicated a self-heating at atmospheric pressure starting at a temperature of 205 °C, which led to a maximum temperature of 410 °C.

Conclusion

Self-heating at atmospheric pressure starting at 205 °C.

Description of key information

Self-heating at atmospheric pressure starting at 205 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

205 °C

Additional information

VDI 2263 Sheet 1 Grewer Oven method