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Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Remarks:
Directive VDI 2263, Sheet 1
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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Remarks:
VDI 2263, Part 1
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
other: Directive VDI 2263, Part 1, burning index
Key result
Test procedure:
other: burning index according to VDI 2263
Remarks:
meaurement at room temperature
Remarks on result:
other: burning index BZ 3
Remarks:
localized combustion or glowing with practically no spreading
Test procedure:
other: burning index according to VDI 2263
Remarks:
measurement at 100°C
Remarks on result:
other: burning index 5
Remarks:
burning with flame or spark generation

No propagation of combustion was recorded during the measurement at room temperature and the combustion behaviour was assessed burning index BZ 3 (localized combustion or glowing with practically no spreading)

Due to the fact that propagation of the combustion was not observed the burning rate did not need to be determined.

Independent fire spread was observed after an ignition source (flame or hot wire, 2 min) was applied at 100°C.

The combustion behaviour of the product at ambient temperature is characterized by the burning index BZ 5 (burning with flame or spark generation)

Interpretation of results:
not classified based on GHS criteria
Conclusions:
the substance has not to be classified as flammable solid according to Regulation (EC) No 1272/2008.
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
measurement according to standard operating procedure of testing institute
Reason / purpose for cross-reference:
reference to same study
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:
Differential Thermal Analysis
Type of method:
differential scanning calorimetry
Decomposition:
yes
Decomp. temp.:
>= 320 °C
Remarks on result:
other: aiir and nitrogen atmosphere

the test material decomposed at an onset temperature of 320°C, peaks 349°C (air) and 346°C (nitrogen atmosphere)

no endothermal process (melting) was recorded

decomposition energy 665 J/g (air) and 632 J/g (nitrogen atmosphere)

Conclusions:
due to the onset temperature of decomposition (320°C), deflagration up to 130°C is exluded
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
particle size distribution (granulometry)
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:
According to appendix R7-1 of ECHA Guidance on Information Requirements and Chemical Safety Assessment multiple techniques should be applied to investigate phys. chem. properties of particulates, although different measurement methods may not provide comparable results. Laser diffraction is the well experienced standard procedure for pigments to determine particle size distribution of the pigment as it is manufactured and delivered.
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Principles of method if other than guideline:
Particle size determination by laser diffraction.
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
0.66 µm
St. dev.:
0.05
Percentile:
D50
Mean:
6.6 µm
St. dev.:
0.86
Percentile:
D90
Mean:
21.4 µm
St. dev.:
4.3

Given standard deviation is based on the general experience with the method and pigments. The estimated values are typical standard deviations for pigments:

D10: 4 % of D10 (minimum value 0.05 µm)

D50: 13 % of D50 (minimum value 0.1 µm)

D90: 29 % of D90 - D50

the test material was sieved prior to measurement (mesh size 2000 µm). About 21 % (w/w) coarse grain remained on the sieve. All values above relate to the sieved material.

D50 of unsieved test material is about 9 µm.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according 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-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide]
EC Number:
226-939-8
EC Name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide]
Cas Number:
5567-15-7
Molecular formula:
C36H32Cl4N6O8
IUPAC Name:
2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutanamide]
Test material form:
solid: bulk

Results and discussion

Relative self-ignition temperature (solids)
Relative self-ignition temperature:
>= 270 °C
Remarks on result:
other: pure test substance and kieselgur mixture

Any other information on results incl. tables

In the screening test according to Grewer with the pure test substance an exothermal effect starting at 270°C was observed. A multi-step reaction led to a maximum product temperature of 560°C.

In the screening test with the kieselgur mixture (1:1) an exothermal effect starting at 270°C was observed. A multi-step reaction led to a maximum product temperature of 540°C.

Applicant's summary and conclusion

Conclusions:
The test item has not to be classified as self-heating substance according to Regulation (EC) No 1272/2008, Annex I, 2.11.4