2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide]

Flammability

Administrative data

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

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, Sheet 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

Relative self-ignition temperature:

>= 270 °C

Remarks on result:

other: pure test substance and kieselgur mixture

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.

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

Cross-reference 2

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

Cross-reference 3

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, burning index

Test material

Test material information

Constituent 1

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

Flammable solids

Flammable solids 1

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

Flammable solids 2

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

Any other information on results incl. tables

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)

Applicant's summary and conclusion

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.