Zinc dioctanoate

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

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

Reference 4

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

supporting study

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)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

GLP compliance:

not specified

Test procedure:

burning rate test: preliminary screening test

Burning time:

0 s

Moisture (wt %):

0.49

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

By the preliminary screening test (A10) the substance does not ignite and propagate combustion either by burning with flame or smoldering along 200 mm of the powder train within the test period. No further testing is required.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

By the preliminary screening test (A10, 1.6.1) the substance does not ignite and propagate combustion either by burning with flame or smoldering along 200 mm of the powder train within the test period. No further testing is required. The substance is not classified as flammable solid based on GHS criteria.

Reference 5

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

3 (not reliable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Qualifier:

according to guideline

Guideline:

other: ATEX Products Directive

Qualifier:

according to guideline

Guideline:

other: VDI-Guideline 2263

GLP compliance:

no

Test procedure:

burning time (test type not further specified)

Remarks:

or specified in description of method (migrated information)

Burning time:

0 s

Remarks on result:

other: localized combustion or glowing with practically no spreading

Burning behaviour class 3: localised combustion or glowing with practically no spreading.

Interpretation of results:

non flammable

Conclusions:

Octanoic acid, zinc salt, basic is not highly flammable and it´s burning behaviour is classified in class 3: localised combustion or glowing with practically no spreading.

Description of key information

Zinc dioctanoate can be designated as not highly flammable, has no pyrophoric properties and does not emit flammable gases in contact with water.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammability of solids

A test on the flammability was conducted for two solid substances representing (i) one metal carboxylates with a lower hydrocarbon content and a cation in the highest oxidation state (Zn(+II)): octanoic acid, zinc salt, basic (77.5 % carbon content) (ii) one metal carboxylate with a higher carbon content and a cation in a high oxidation state (Zn(+II)): Zinc didocosanoate (91.5 % carbon content). Both tests yielded a result of “not flammable”. Since zinc dioctanoate is also an inorganic metal carboxylate containing the metal cation in the highest oxidised status and an anion of an acid which is less susceptible to any form of oxidation than zinc didocosanoate (i.e. a lower hydro-carbon content 82 %), zinc dioctanoate can be regarded as "not flammable". Further testing is not required in accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1.1.1. A classification as flammable solid is not warranted.

Flammability in contact with water

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 (cf. Section 1, Annex XI of Regulation (EC) 1907/2006).

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. Zinc dioctanoate is stable at ambient temperature. It 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 (ca. 20 °C). Furthermore, long-term industrial experience in handling shows that zinc dioctanoate does not ignite in contact with air (cf. Section 1, Annex XI of Regulation (EC) 1907/2006) .

Justification for classification or non-classification

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