N-(4-ethoxyphenyl)-3-hydroxy-4-[(2,4,5-trichlorophenyl)azo]naphthalene-2-carboxamide

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Remarks:

Grewer-oven

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: VDI 2263-1

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: VDI 2263-1

Deviations:

no

Principles of method if other than guideline:

The self-heating in air is studied in a screening test according to Grewer (Grewer-Oven-Test, VDI 2263-1). A wire basket (V = 8 cm³) is heated in a preheated air stream and any temperature change in the sample centre is measured compared to an inert reference substance (graphite). The heating rate is 1.8 K/min.
In addition to the Grewer-Oven-Test with the pure substance a mixture with kieselgur (1:1) is tested. Kieselgur prevents the meshes of the basket to be filled with swollen material: air can diffuse into the wire basket during the whole test. Additionally kieselgur prevents the wire basket from emptying due to melting of the product. In this case the self-heating of the product in contact with porous material with high specific surface e.g. insulation material or deposits is simulated.

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

Pigment Additiv FGR

IUPAC Name:

Pigment Additiv FGR

Constituent 2

Reference substance name:

N-(4-ethoxyphenyl)-3-hydroxy-4-[(2,4,5-trichlorophenyl)azo]naphthalene-2-carboxamide

EC Number:

225-691-8

EC Name:

N-(4-ethoxyphenyl)-3-hydroxy-4-[(2,4,5-trichlorophenyl)azo]naphthalene-2-carboxamide

Cas Number:

5012-29-3

Molecular formula:

C25H18Cl3N3O3

IUPAC Name:

N-(4-ethoxyphenyl)-3-hydroxy-4-[(2,4,5-trichlorophenyl)diazenyl]-2-naphthamide

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

Identification: Pigment Additiv FGR
Batch: FB3212.013
CAS-No.: 5012-29-3
EINECS / EC-No.: 225-691-8
Purity: 94.51% (w/w), dose calculation was not be adjusted to purity
Appearance: Brown powder
Expiry Date: 10.05.2020 (Statement of producer)
Storage Conditions: At room temperature
Stability in Solvent: > 72 h in DMSO at room temperature
> 72 h in 1,2-propylene glycol at room temperature
Certificate of Analysis: AZ 577/Toxd2, dated 11. December 2015

Results and discussion

Relative self-ignition temperature (solids)

Relative self-ignition temperature:

ca. 190 °C

Remarks on result:

other: screening test

Remarks:

further tests are necessary

Applicant's summary and conclusion

Conclusions:

Self heating - pure substance - (Grewer oven, heating rate 1.8 K/min) starting at 190°C.
Self heating - mixture with Kieselgur (1:1) - (Grewer oven, heating rate 1.8 K/min) starting at 270°C.

Executive summary:

Assessment of self-heating behaviour:

In the Grewer-Oven-Test with the pure product the beginning of the first exothermal effect was detected at 190 °C.

UN Transport Regulations: Due to the results from the Grewer-Oven-Test further tests are necessary to classify or exclude the substance as “self-heating substance” (class 4.2).

EU-GHS/CLP: Due to the results from the Grewer-Oven-Test further tests are necessary to classify or exclude the substance as “self-heating substance”.