Aluminium Bordeaux

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

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:

guideline study

Remarks:

Test procedure according to UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria

Qualifier:

according to guideline

Guideline:

other: UN Manual of Tests and Criteria, Part III, N.4

Key result

Relative self-ignition temperature:

> 140 °C

During the entire test (26 hours) the sample temperature was below the oven temperature of 140°C. The maximum sample temperature was 138.5°C.

Conclusions:

neither spontaneous ignition nor self-heating exceeding the oven temperature of 140°C was observed. Therefore, the substance has not to be classified as self-heating according to Regulation (EC) No 1272/2008.

Reference 2

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:

VDI 2263, part 1

Qualifier:

according to guideline

Guideline:

other: Directive VDI 2263, Part 1

Relative self-ignition temperature:

>= 200 °C

Remarks on result:

other: result refers to the pure test substance

Relative self-ignition temperature:

>= 210 °C

Remarks on result:

other: result refers to the test substance/Kieselguhr mixture (1:1)

In the screening test according to Grewer with the pure product an endothermal effect was observed in the temperature range 130 - 200°C. At 200°C the beginning of an exothermal effect was recorded. A multistage reaction was observed which led to a maximum temperature of approximately 540 °C.

In the screening test with the kieselgur mixture (1:1) only weak exothermal effects were detected starting at 210°C.

Conclusions:

Due to the results from the Grewer-Oven screening test further studies are necessary to exclude or classify the substance as self-heating substance according to Regulation (EC) No 1272/2008.

Additional information

The self-heating in air was studied in a screening test according to Grewer (Grewer-Oven-Test, VDI 2263-1) with the pure test substance and additionally with a 1:1 kieselguhr mixture.

In this test with the pure product an exothermal effect was recorded starting at 200 °C. A multistage reaction was observed which led to a maximum product temperature of more than 500 °C. With the kieselgur mixture (1:1) a weak exothermal effect was detected starting at 210 °C. A multistage reaction was observed which led to a maximum product temperature of more than 540 °C.

Due to these results from the Grewer-Oven Test an UN N.4 test according to the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, was performed in order to exclude or classify the substance as self-heating substance according to Regulation (EC) No 1272/2008.

In this higher tier study the test item was placed in a cube-form sample container of stainless steel. wire netting (edge length 10 cm, defined mesh size: 0.053 mm) with their top surface open. The oven temperature was adjusted to the test temperature of 140°C.

After approximately 5 hours the test item reached a temperature of 133 5°C. The maximum temperature of the test item was 138.5 °C. After approximately 26 hours the test was terminated.

Neither spontaneous ignition nor self-heating exceeding the oven temperature of 140°C was observed. Therefore, the substance has not to be classified as self-heating according to Regulation (EC) No 1272/2008.