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Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2002
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
according to VDI 2263 and UN N.4, but limited documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report date:
2002

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
other: UN N.4
Qualifier:
equivalent or similar to guideline
Guideline:
other: Directive VDI 2263, part 1

Test material

Constituent 1
Chemical structure
Reference substance name:
4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[2,4-dihydro-5-methyl-2-(p-tolyl)-3H-pyrazol-3-one]
EC Number:
239-898-6
EC Name:
4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[2,4-dihydro-5-methyl-2-(p-tolyl)-3H-pyrazol-3-one]
Cas Number:
15793-73-4
Molecular formula:
C34H28Cl2N8O2
IUPAC Name:
4,4'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[5-methyl-2-(4-methylphenyl)-2,4-dihydro-3H-pyrazol-3-one]
Test material form:
solid: nanoform

Results and discussion

Relative self-ignition temperature (solids)
Relative self-ignition temperature:
>= 250 °C
Remarks on result:
other:
Remarks:
onset temperature in the simulated Grewer oven

Any other information on results incl. tables

1. Self-ignition screening by Grewer simulation using RADEX Air Streaming:

Gradual temperature rise from ca. 250 °C, sharp onset at ca. 300°C, temperature rise up to ca. 370°C

2. Hot storage test according to UN N.4: no self-heating recorded during the 24 hour test

Temperature rise < 1 °C

Applicant's summary and conclusion

Conclusions:
The test item is not self-heating substance according to Regulation (EC) No 1272/2008.

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