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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, part 1
Cross-referenceopen allclose all
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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Remarks:
standard operating procedure of testing institute
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: mean of two measurements

the test substance decomposed at an onset temperature of 320°C (peak 353°C), decomposition energy 230 J/g

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)
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
2.5 µm
St. dev.:
0.32
Percentile:
D10
Mean:
0.59 µm
St. dev.:
0.1
Percentile:
D90
Mean:
6.56 µm
St. dev.:
1.2

For further percentiles see attached report.

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

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'-[ethylenebis(oxyphenyl-2,1-eneazo)]bis[N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-oxobutyramide
EC Number:
278-770-4
EC Name:
2,2'-[ethylenebis(oxyphenyl-2,1-eneazo)]bis[N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-oxobutyramide
Cas Number:
77804-81-0
Molecular formula:
C36H32N10O8
IUPAC Name:
2,2'-[ethylenebis(oxyphenyl-2,1-eneazo)]bis[N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-oxobutyramide
Test material form:
solid: nanoform

Results and discussion

Relative self-ignition temperature (solids)
Relative self-ignition temperature:
>= 320 °C
Remarks on result:
other:
Remarks:
relates to the pure test sample and the 1:1 Kieselgur mixture

Any other information on results incl. tables

Pure test-item: self-heating at 320°C leading to a maximum temperature of 385°C

1:1 Kieselgur mixture: self-heating at 320°C leading to a maximum temperature of 415°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