Registration Dossier

Administrative data

Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
21. August 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Worker safety studies, conducted to recognised guideline but not GLP compliant.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guideline
Qualifier:
no guideline followed
Guideline:
other: screening test developed by Grewer.
Deviations:
not applicable
Principles of method if other than guideline:
The auto-ignition behavior was investigated in the screening test for Grewer (Grewer Oven, VDI 2263). The test in a small wire basket of 8 cm³ volume and heated up with preheated air flow with a heating rate of 1.8 K / min. The temperature inside the test against an inert reference substance (graphite) is measured.
GLP compliance:
no

Test material

Constituent 1
Details on test material:
Name: Reactive Orange F08-0314

Results and discussion

Auto-ignition temperature (liquids / gases)
Auto-ignition temperature:
220 °C
Remarks on result:
other: thermal decomposition superposed by an oxidation reaction
Relative self-ignition temperature (solids)
Relative self-ignition temperature:
220 °C
Remarks on result:
other: thermal decomposition superposed by an oxidation reaction

Applicant's summary and conclusion

Conclusions:
A self heating reaction was detected at 220 ° C. Further assessment using Kieselgur demonstrated a reaction at 320 °C; this is attributed to the dilution effect of Kieselgur.
Executive summary:

The auto-ignition behavior was investigated in the screening test for Grewer (Grewer Oven, VDI 2263, sheet 1). The test in a small wire basket 8 cm³ is volume presented and heated up with preheated air flow with a heating rate of 1.8 K / min. The temperature inside the test against an inert reference substance (graphite) is measured.

In the event that the sample melts before or during the oxidation reaction, an additional with the sample mixed with diatomaceous earth (1: 1) is conducted. This test the auto-ignition potential of the sample in contact with porous materials with high specific surface area is re-enacted as insulation material or debris.

 

To verify the influence of air on the thermal stability measurements in the open Crucible was repeated with the same heating rate among 20 bar pressure. A strong exothermic reaction occurs over about 220 ° C. This reaction is due to thermal degradation that is masked by an oxidation reaction. After reading the sample to 51% by weight was evaporates.

 

Spontaneous combustion: The pure product showed a spontaneous combustion in Grewer Oven to air at 220 ° C. Mixed with diatomaceous earth (1: 1), a self heating was detected at 320 ° C which is due to the dilution effect of Kieselgurs. In the DSC under 20 bar air a thermal decomposition superimposed by an oxidation reaction from a temperature of 220 ° C has been detected.

Self ignition: at 220°C on air (thermal decomposition superposed by an oxidation reaction). The substance is not proposed to be auto-flammable.