Resin acids and Rosin acids, cobalt salts

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

comparable to guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

yes

Remarks:

Study done according ONU method N1, close to EU method A10.

GLP compliance:

yes

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 screening test :

The substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 4 minutes (test period), then the substance should not be considered as flammable and no further testing is required (no Burning rate test).

Interpretation of results:

not classified based on GHS criteria

Conclusions:

No burning time available because of the primary screening test. Primary screening test is enough to conclude that the substance is not flammable.

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

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 of solids

No burning time available because of the primary screening test. Primary screening test is enough to conclude that the substance is not flammable. The substance has not to be classified as flammable solid according to GHS.

Testing of flammability does not appear scientifically necessary:

- Testing for flammability in contact with water (A.12) is not considered to be required, because the substance 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 the substance 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 of solids

Preliminary screening test :

Resin acids and Rosin acids, cobalt salts does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 4 minutes (test period), then the substance should not be considered as flammable and no further testing is required (no Burning rate test). The substance has not to be classified as flammable solid according to GHS.

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 also 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 (in ).

Flammability in contact with water

Testing for flammability in contact with water is not considered to be required, because the substance 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 the substance shows that it does not react with water, and recent experimental testing for water solubility has also not reported any formation of gases.

Justification for classification or non-classification

Cobalt trihydroxide does not need to be classified according to CLP Regulation (EC) No 1272/2008 since it is not highly flammable.