5,12-dihydroquino[2,3-b]acridine-7,14-dione

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:

Directive 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, 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:

>= 310 °C

Remarks on result:

other: pure test substance

Relative self-ignition temperature:

>= 330 °C

Remarks on result:

other: 1:1 mixture of test substance with Kieselguhr

In the screening test according to Grewer with the pure test substance an exothermal effect starting at 310°C was observed, which led to a maximum product temperature of 630°C.

In the screening test with the kieselgur mixture (1:1) an exothermal effect starting at 330°C was observed. Self-heating led to a temperature of 650 °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

Principles of method if other than guideline:

Differential Thermal Analysis

Type of method:

differential scanning calorimetry

Melting / freezing pt.:

> 500 °C

Decomposition:

no

Decomp. temp.:

> 500 °C

neither melting nor decomposition were recorded up to the final measurement temperature of 500°C in the two runs.

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, burning index

Test material

Test material information

Constituent 1

Reference substance name:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

EC Number:

213-879-2

EC Name:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

Cas Number:

1047-16-1

Molecular formula:

C20H12N2O2

IUPAC Name:

5,7,12,14-tetrahydro-5,12-diazapentacene-7,14-dione

Test material form:

solid: nanoform

Results and discussion

Flammable solids

Key result

Test procedure:

other: burning index according to VDI 2263

Remarks on result:

other: burning index BZ 2

Remarks:

brief ignition and rapid extinction

Any other information on results incl. tables

sample preparation: the test item was dried at 120°C until constant weight.

Using an ignition source (flame or hot wire, 2 min) at ambient temperature and at a temperature of 100°C, the test item could only be ignited briefly with rapid extinction. No spreading of combustion was detected.

The combustion behaviour of the product at ambient and at elevated temperature is characterized by the burning index BZ 2 (brief ignition and rapid extinction).

Due to the fact that no propagation of the combustion was observed the burning rate did not need to be determined.

Applicant's summary and conclusion

Interpretation of results:

not classified based on GHS criteria

Conclusions:

Combustion Number (BZ) 2 was determined.
Therefore, the substance has not to be classified as flammable solid according to Regulation (EC) No 1272/2008.