2,4-bis[N'-(4-methylphenyl)ureido]toluene

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

September 21, 1992 - September 22, 1992

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

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:

2,4-bis[N'-(4-methylphenyl)ureido]toluene

EC Number:

411-790-5

EC Name:

2,4-bis[N'-(4-methylphenyl)ureido]toluene

Cas Number:

54390-87-3

Molecular formula:

C23H24N4O2, C24H34N4O2

IUPAC Name:

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

Test material form:

solid: particulate/powder

Details on test material:

- Name of test material (as cited in study report): KY-MA
- Lot/batch No.: 4HT059M
- Expiration date of the lot/batch: August 5, 1994
- Physical state: Light yellow solid
- Storage condition of test material: At room temperature in the dark

Specific details on test material used for the study:

At temperatures above 180°C the substance evaporates, reacts and/or decomposes.

Results and discussion

Relative self-ignition temperature (solids)

Remarks on result:

no self ignition observed under the test conditions

Any other information on results incl. tables

Run time experiment [min]	Oven temperature [°C]	Sample temperature [°C]
0	35	35
100	80	80
200	125	125
300	170	170
400	220	220
500	265	265
524	280	280
532	280	340
538	285	290
600	320	325
700	370	370
760	400	400

- The test substance showed an exothermic reaction, starting at an oven temperature of approx. 280°C and reached a maximum temperature of 340°C.

- The test substance did not reach 400°C by self-ignition

Applicant's summary and conclusion

Conclusions:

No self-ignition took place up to 400°C.

Executive summary:

In a GLP study performed according to EC A.16, using a temperature programmed laboratory oven, a stainless steel wire mesh cube, NiCr/NiAl thermocouples and a temperature recording device, no self-ignition took place up to 400°C.