Registration Dossier

Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
10Oct2001 to 03Jul2003
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003
Report Date:
2003

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
not specified
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Details on test material:
See individual study reports for purity information and CofA where applicable
Specific details on test material used for the study:
Chemical name: lH-imidazolium,2-[(4-aminophenyl)azo]-l,3-dimethyl-, chloride
CAS Number: 97404-02-9
Physical state: Purple powder
Sponsor batch: 013673A1
Purity: 94.1% (stated by Sponsor)
Arrival date: 26 October 2001
Expiry date: 1 November 2003 (stated by Sponsor)
Storage conditions: Room temperature (10 to 30°C)

Results and discussion

Relative self-ignition temperature (solids)
Key result
Relative self-ignition temperature:
200 °C

Any other information on results incl. tables

The resultant temperature/time chart trace from the experiment was examined and an exotherm of sufficient magnitude to constitute a self-ignition temperature is visible with an indicated oven temperature of 200°C. This corresponds well with the decomposition exotherm at close to this temperature. Prior to heating, the test sample was a purple powder. After heating, a black residue was present at the bottom of the furnace.

Applicant's summary and conclusion

Conclusions:
The resultant temperature/time chart trace from the experiment was examined and an exotherm of sufficient magnitude to constitute a self-ignition temperature is visible with an indicated oven temperature of 200°C. This corresponds well with the decomposition exotherm at close to this temperature. Prior to heating, the test sample was a purple powder. After heating, a black residue was present at the bottom of the furnace.

On heating the test material to 400°C, self-ignition was observed at 200°C.
Executive summary:

The resultant temperature/time chart trace from the experiment was examined and an exotherm of sufficient magnitude to constitute a self-ignition temperature is visible with an indicated oven temperature of 200°C. This corresponds well with the decomposition exotherm at close to this temperature. Prior to heating, the test sample was a purple powder. After heating, a black residue was present at the bottom of the furnace.

On heating the test material to 400°C, self-ignition was observed at 200°C.