Registration Dossier

Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1999-2000
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Remarks:
equivalent or similiar to Directive VDI 2263, part 1, limited documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000
Report date:
2000

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: Directive VDI 2263, part 1
Principles of method if other than guideline:
1) Screening test according to Grewer
2) Test with higher volume (hot storage test)

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methoxyphenyl)-3-oxobutyramide]
EC Number:
224-867-1
EC Name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methoxyphenyl)-3-oxobutyramide]
Cas Number:
4531-49-1
Molecular formula:
C34H30Cl2N6O6
IUPAC Name:
2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(2-methoxyphenyl)-3-oxobutanamide]
Test material form:
solid: nanoform

Results and discussion

Relative self-ignition temperature (solids)
Relative self-ignition temperature:
>= 280 °C

Any other information on results incl. tables

In the screening test according to Grewer slow self-heating was observed at an onset temperature of 280°C. Above 400°C, strong self-heating was recorded leading to open fire.

Due to the results of the screening test no further testing is required.

Although the substance has not be classified as self-heating substance according to Regulation (EC) 1272/2008, for reasons of process safety (e.g. drying conditions during manufacturing process) a hot storage test using a 1 L mesh wire basket (260 g test item) was conducted at 200°C. After 2,2 hours the test item temperature was adapted to 200°C following by a temperature raise to the maximum temperature of 232°C afte further 57 min. Then, the test item cooled down to 200°C after about 8 hours and kept this temperature for the entire duration of the test (64 hours).

Applicant's summary and conclusion

Conclusions:
The substance has not to be classified as self-heating substance according to Regulation (EC) 1272/2008