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Physical & Chemical properties

Flammability

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Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2017-08-16 to 2018-02-28
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Test procedure:
burning rate test: preliminary screening test
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

Safety pre-test

The test item expanded heavy. The test item changed the colour from brown into white-brown. Then the test item carbonized.

Preliminary screening test

The test item expanded. Then the colour of the test item changed from brown into white-brown. Then the test item carbonized and the colour changed into black. No signs of ignition were observed.

Since ignition did not occur within two minutes, the test item was classified as not highly flammable (for EU regulations) and non-flammable solid (for UN regulations), resp. No determination of burning rate was necessary.

Interpretation of results:
GHS criteria not met
Conclusions:
The test item did not ignite in the preliminary screening test, therefore, it is not classified as flammable solid.
Executive summary:

A preliminary test according to UN N.1 was performed to determine the flammability of the test substance. The test item was formed into a powder train. The flame from a teclu burner was applied to one end of the powder train for 2 minutes. The test item expanded. Then the colour of the test item changed from brown into white-brown. Then the test item carbonized and the colour changed into black. No signs of ignition were observed. Based on the results of the preliminary test, no main test was performed. The test item is considered as a not readily combustible solid of Division 4.1. and is not a flammable solid.

Endpoint:
flammable solids
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
Please refer to section 13 for "Read-Across justification".
Reason / purpose:
read-across source
Key result
Test procedure:
burning rate test: preliminary screening test
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
Endpoint:
flammable gases
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a liquid
Endpoint:
pyrophoric liquids
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
Endpoint:
pyrophoric solids
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a liquid
Endpoint:
self-heating substances / mixtures
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a liquid
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

Description of key information

The substance is not classified as flammable liquid, flammable in contact with water, pyrophoric, self-reactive substance, self-heating substance and organic peroxide.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

Flammable solids:

A read-across to the calcium salt of the target substance was performed. As both the target and the source substances are a highly viscous semi-solid masses, a flash point test was technically not possible, therefore, a flammability test with the source substance was performed. The difference in the cations does not play a role on the flammability of the two test substances. A preliminary test according to UN N.1 was performed to determine the flammability of the source test substance. The source test item was formed into a powder train. The flame from a teclu burner was applied to one end of the powder train for 2 minutes. The test item expanded. Then the colour of the test item changed from brown into white-brown. Then the test item carbonized and the colour changed into black. No signs of ignition were observed. Based on the results of the preliminary test, no main test was performed. The test item is considered as a not readily combustible solid of Division 4.1. and is not a flammable solid.

Flammable gases:

The test item is a liquid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as flammable gas.

Flammable liquids:

A Flash point study is technically not feasible due to the physicyl state of the test substance. Therefore, a study according EU Method A.10 and UN N.1 was performed.

Pyrophoric solids:

The test item is a liquid at ambient conditions. This hazard class is only applicable for solids. Thus, the substance was not considered for classification as pyrophoric solids.

Pyrophoric liquids:

In accordance with section 2.9.4 Annex I of Regulation (EC) No 1272/2008 and ECHA guidance on the application of CLP Criteria section 2.10.4.2 the classification procedure for pyrophoric liquids need not to be applied when experience in manufacturing or handling shows that the substance or mixture does not ignite spontaneously when coming into contact with air at normal temperatures. Based on the experience in handling and use the substance is not known to ignite spontaneously when coming into contact with air at normal temperatures. Thus, no study was conducted.

Self-heating substances:

In accordance with ECHA guidance on the Application of the CLP Criteria section 2.11.4.2 and ECHA guidance on IR/CSA chapter R.7a section R7.1.10.7 the test does not to be conducted as in general liquids are not classified as self-heating since the phenomena applies only to solids and the test method is not applicable to liquids according to ECHA guidance on the Application of the CLP Criteria section 2.11.4.2.

Substances which, in contact with water, emit flammable gases:

In accordance with column 2 of REACH Annex VI and with Regulation (EC) No 1272/2008 Annex I section 2.12.4 and ECHA guidance on the application of CLP Criteria section 2.12.4.2 the classification procedure for this hazard class need not to be applied. Based on the experience in handling and use the substance does not react with water and in addition the test substance is not pyrophoric. Thus, no study was conducted and the substance was not considered for classification.

Flammable Aerosols:

Section 2.4.2 of Guidance on the application on the CLP Criteria state as follows: “Aerosols, this means aerosol dispensers, are any non-refillable receptacles made of metal, glass or plastics and containing a gas compressed, liquefied or dissolved under pressure, with or without a liquid, paste or powder, and fitted with a release device allowing the contents to be ejected as solid or liquid particles in suspension in a gas, as a foam, paste or powder or in a liquid state or in a gaseous state." Thus, as the substance does not meet the definition for aerosol, the test for aerosols was waived. Consequently the substance has not to be considered for classification for this hazard class.

 

In conclusion, the substance doesn't have not to be considered as flammable gas, flammable liquid, flammable solid, flammable in contact with water, flammable aerosol, pyrophoric solid, pyrophoric liquid or self-heating substance.

Justification for classification or non-classification

Based on the study results, the molecular structure and experience in handling and use, the substance was not classified and labelled as flammable, flammable in contact with water, pyrophoric, self-reactive substance, self-heating substance and organic peroxide according to Regulation (EC) No 1272/2008 (CLP). In accordance with UN-Transport regulations the substance has not to be classified as readily combustible solid and self-reactive substance in Class 4 Division 4.1, as self-heating substance in Class 4 Division 4.2, as substances which in contact with water emit flammable gases in Class 4 Division 4.3 and as organic peroxide in Class 5 division 5.2.