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Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 29, 1999
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
according to UN test N.4., but limited documentation
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Remarks:
standard operating procedure of test institute, equivalent to Directive VDI 2263, part 1
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
equivalent or similar to guideline
Guideline:
other: Directive VID 2263, part 1
Principles of method if other than guideline:
Determination of the "Brennzahl" (see below) and burning rate

Test procedure:
other: determination of the combustion class (Brennzahl)
Remarks on result:
other: BZ 5 was assigned
Test procedure:
burning rate test: preliminary screening test
Remarks on result:
not determinable
Remarks:
test substance extinguished at an early state of the test line

Brennzahl (BZ, combustion class) 5 was assigned to the test material: "burning with flame or spark generation"

the test for the determination of the burning rate had to be conducted. In the pre-test the flame of the ignited test item extinguishes at an early stage of the test line.

Interpretation of results:
GHS criteria not met
Remarks:
Regulation EC 1272/2008
Conclusions:
the test item has not to be classified as flammable solid according to Regulation EC 1272/2008
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
March 29, 1999
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
according to standard operating procedure of test insttitute
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Principles of method if other than guideline:
Malvern laser diffraction
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
3.5 µm
St. dev.:
0.46

Standard deviation calculated from experience with pigments: 0.13 x D50 (minimum value: 0.1)

Conclusions:
The mass median diameter is 3.5 µm.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

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

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-methylphenyl)-3-oxobutyramide]
EC Number:
226-789-3
EC Name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methylphenyl)-3-oxobutyramide]
Cas Number:
5468-75-7
Molecular formula:
C34H30Cl2N6O4
IUPAC Name:
2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(2-methylphenyl)-3-oxobutanamide]
Test material form:
solid: nanoform

Results and discussion

Relative self-ignition temperature (solids)open allclose all
Relative self-ignition temperature:
>= 210 °C
Remarks on result:
preliminary test
Remarks:
screening test according to Grewer
Key result
Relative self-ignition temperature:
> 140 °C
Remarks on result:
no self ignition observed under the test conditions
Remarks:
UN test N.4, 60 hour test period

Any other information on results incl. tables

In the screening test, the test item showed heating from 210°C onwards in the Grewer oven.

UN test N.4.: Testing revealed sample heating of less than 10 K over the 60 hour test period.

Applicant's summary and conclusion

Conclusions:
Based on the results of the UN test N.4. the substance has not to be classified as self-heating substance according to Regulation (EC) No 1272/2008.