A mixture of: 2,4 -bis(N'-(4-methylphenyl)ureido)toluene; 2,6 -bis(N'-(4-methylphenyl)ureido)toluene

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Administrative data

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

September 16, 1992 - September 17, 1992

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: This study has been performed according to EU Method A.16 (1984) and according to GLP principles. Limited information available to verify the composition of the used test substance.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1992

Report date:

1992

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Version / remarks:

(1984)

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

A mixture of: 2,4 -bis(N'-(4-methylphenyl)ureido)toluene; 2,6 -bis(N'-(4-methylphenyl)ureido)toluene

EC Number:

411-070-0

EC Name:

A mixture of: 2,4 -bis(N'-(4-methylphenyl)ureido)toluene; 2,6 -bis(N'-(4-methylphenyl)ureido)toluene

Molecular formula:

C23H24N4O2

IUPAC Name:

3-(2-methyl-5-{[(4-methylphenyl)carbamoyl]amino}phenyl)-1-(4-methylphenyl)urea

Details on test material:

- Name of test material (as cited in study report): KY-ET
- Appearance: Light yellow solid
- Storage condition of test material: At room temperature in the dark

Results and discussion

Relative self-ignition temperature (solids)

Remarks on result:

other: The substance is not self-ignitable

Any other information on results incl. tables

Run time experiment [min]	Oven temperature [°C]	Sample temperature [°C]
0	35	35
100	80	80
200	120	120
300	170	170
400	220	220
500	265	265
540	285	285
542	285	320
548	290	290
600	315	315
700	365	365
760	400	400

- The test substance showed an exothermic reaction, starting at an oven temperature of approx. 280 degrees Celsius. During this reaction, the test substance reached a maximum temperature of 320 degrees Celsius.

- The test substance did not reach 400 degrees Celsius by self-ignition

Applicant's summary and conclusion

Conclusions:

In accordance with EU Method A.16 (1984) and according to GLP principles the self-ignition temperature of the substance was determined using a temperature programmed laboratory oven, a stainless steel wire mesh cube, NiCr/NiAl thermocouples and a temperature recording device. Based on the results obtained the substance is considered „not self-ignitable‟ in accordance with EU Method A.16.