Naphthenic acids, nickel salts

Flammability

Link to relevant study record(s)

Reference

Reference 1

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 substance is known to be soluble in water to form a stable mixture

Reference 2

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

Reference 3

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-08-22

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

Qualifier:

according to guideline

Guideline:

other: VDI 2263, Sheet 1

Version / remarks:

1990

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2017-02-28

Specific details on test material used for the study:

Storage conditions: Room temperature tightly closed

Test procedure:

burning rate test: preliminary screening test

Burning time:

0 s

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Preliminary Test

The test item could not be ignited at room temperature using a flame as ignition source being applied for at least 2 minutes.

Main Test

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

Interpretation of results:

not classified based on GHS criteria

Conclusions:

Final Results
The test item naphthenic acids, nickel salts could not be ignited applying a flame as ignition source for at least 2 minutes.

The test item is classified as follows:
UN Transport Regulation: The test item has not to be classified as readily combustible solid in class 4.1 according to the UN Transport Regulation.
GHS (CLP Regulation EC 1272/2008: Annex 1: 2.7): The test item has not to be classified as flammable solid according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7.

Description of key information

Naphthenic acids, nickel salts has not to be classified as readily combustible solid in class 4.1 according to the UN Transport Regulation and as flammable solid according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7.

Testing of flammability in contact with water and for pyrophoric properties does not appear scientifically necessary according to Regulation (EC) No 1907/2006, Annex XI, Section 1.

- Testing for flammability in contact with water (A.12) is not considered to be required, because naphthenic acids, nickel salts does not contain groups that might lead to a reaction with water or damp air, leading to the development of dangerous amounts of gas or gases which may be highly flammable

- Testing of pyrophoric properties of solids and liquids (A.13) is not considered to be required, since naphthenic acids, nickel salts is stable at ambient temperature. It does not contain any chemical group that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (approx. 20 °C)

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammability

Naphthenic acids, nickel salts could not be ignited applying a flame as ignition source for at least 2 minutes.

The test item is classified as follows

UN Transport Regulation: The test item has not to be classified as readily combustible solid in class 4.1 according to the UN Transport Regulation.

GHS (CLP Regulation EC 1272/2008: Annex 1: 2.7): The test item has not to be classified as flammable solid according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7.

Pyrophoric properties

Testing for pyrophoric properties is not considered to be required, since naphthenic acids, nickel salts is stable at ambient temperature. It does not contain any chemical groups that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (ca. 20 °C). Furthermore, long-term industrial experience in handling shows that naphthenic acids, nickel salts does not ignite in contact with air (in accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1).

Flammability in contact with water

Testing for flammability in contact with water is not considered to be required, because naphthenic acids, nickel salts does not contain groups that might lead to a reaction with water or damp air, leading to the development of dangerous amounts of gas or gases which may be highly flammable. Furthermore, long-term industrial experience in practical handling of naphthenic acids, nickel salts shows that it does not react with water, and recent experimental testing for water solubility has also not reported any formation of gases (in accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1.2).

Justification for classification or non-classification

Naphthenic acids, nickel salts does not need to be classified according to CLP Regulation (EC) No 1272/2008 since it is not highly flammable.