2,2'-[ethylenebis(oxyphenyl-2,1-eneazo)]bis[N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-oxobutyramide

Melting point / freezing point

Administrative data

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

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

reference to same study

Reference

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

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

Relative self-ignition temperature:

>= 320 °C

Remarks on result:

other:

Remarks:

relates to the pure test sample and the 1:1 Kieselgur mixture

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

Conclusions:

the test item has not to be classified as self-heating substance according to Regulation (EC) no 1272/2008

Cross-reference 2

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

Principles of method if other than guideline:

Differential Thermal Analysis

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

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

Melting / freezing point

Decomposition:

yes

Decomp. temp.:

>= 320 °C

Remarks on result:

other: mean of two measurements

Any other information on results incl. tables

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