Dichromium nitride

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-09-12

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Version / remarks:

2015

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

signed 2017-02-28

Key result

Test procedure:

burning rate test: preliminary screening test

Burning time:

0 s

Remarks on result:

other: test item could not be ignited

Preliminary Test

The test item did not ignite using a flame (min 1000 °C) as ignition source for at least 2 minutes.

Main Test

In the preliminary test the test item could not be ignited. Thus, the performance of the main test was not necessary.

Classification

UN Transport Regulation

The test item does not meet the classification criteria as readily combustible solid in Class 4 Division 4.1 according to the UN Transport Regulation.

GHS / CLP Regulation EC 1272/2008 Annex:

The test item does not meet the classification criteria as flammable solid, according to GHS and EC 1272/2008 (CLP Regulation) Annex 1, Section 2.7.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item dichromium nitride could not be ignited in the preliminary screening test by applying a flame (min. 1000 °C) as ignition source for at least 2 minutes.
The test item does not meet the classification criteria as a highly flammable solid nor as a readily combustible solid in class 4.1 according to the UN Transport Regulation. Likewise, classification as a flammable solid is not required according to GHS / CLP Regulation EC 1272/2008 Annex 1, Section 2.7.

Reference 2

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water

Reference 3

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Description of key information

Flammability solids: no

Flammability in contact with water: no

Pyrophoric properties: no

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammability solids

The item dichromium nitride could not be ignited in the preliminary test applying a flame (min. 1000 °C) as ignition source for at least 2 minutes.

The test item does not meet the classification criteria as a highly flammable solid nor as a readily combustible solid in class 4.1 according to the UN Transport Regulation. Likewise, classification as a flammable solid is not required according to GHS / CLP Regulation EC 1272/2008 Annex 1, Section 2.7.

Flammability in contact with water

The study does not need to be conducted because the substance is known to be stable in contact with water.

Pyrophoric properties

The study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied. This substance does not contain any chemical groups that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (circa 20 °C). Furthermore, long-term industrial experience in handling shows that the substance does not ignite in contact with air.

Justification for classification or non-classification

The test item does not not have to be classfied as flammable substance. Hence, C&L is not required in accordance with the UN Transport Regulation and GHS and Regulation (EC) No 1272/2008 (CLP Regulation).