Azelaic acid, calcium salt (1:1)

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:

02 January - 10 April 2019

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

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
13502 or 13995
- Expiration date of the lot/batch:
19 December 2020

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
At room temperature

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

The flame of the gas burner did ignite the test item pile. The test item glowed, burned with an orange flame and turned into a black charred residue. Black smoke was observed. After removal of the ignition source, the flame extinguished after 5 seconds and no propagation of combustion was observed. 

Interpretation of results:

not classified based on GHS criteria

Conclusions:

No propagation of combustion of the test item along 200 mm length of the pile within 2 minutes was observed. Based on the results obtained, the test item is considered ‘not flammable’.

Executive summary:

A study to determine the flammability of calcium azelate was conducted according to the UN N.1 guideline. The preliminary screening test was performed for the determination of the flammability of the test item.

No propagation of combustion of the test item along 200 mm length of the pile within 2 minutes was observed. According to the guidelines, the performance of the burning rate test was not required. Based on the results obtained, the test item is considered ‘not flammable’.

The study was conducted according to standard guidelines and is GLP-compliant and therefore is considered as reliable without restrictions.

Reference 2

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02 January - 10 April 2019

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.4 (Test method for self-heating substances)

Version / remarks:

2015

Deviations:

no

GLP compliance:

yes

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
13502 or 13995
- Expiration date of the lot/batch:
19 December 2020


STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
At room temperature

Test procedure:

100 mm sample cube at 140°C

Max. temp. reached:

140

Induction time (h):

24

Result:

negative outcome (no effect observed)

During the experiment no spontaneous ignition occurred and no exothermic effect of the test item was observed. It demonstrated that the test item is “not a self-heating substance”. According to the UN guideline, no further testing was required.

After the experiment, the consistency of the sample was unchanged, i.e. no reaction and/or decomposition of the test item was observed.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

Calcium azelate is not a self-heating substance.

Executive summary:

A study to determine self-heating properties of test item, calcium azelate, was conducted following the UN N.4 guideline (“Test Method for Self-heating Substances”). The test item was exposed to air at 140°C for 24 hours and the temperature of the sample and the oven were recorded at time intervals of 5 minutes.

 No spontaneous ignition occurred and no exothermic effect of the test item was observed, therefore the test item is considered “not a self-heating substance”. 

The study was conducted according to standard guidelines and is GLP-compliant and therefore is considered as reliable without restrictions.

Description of key information

Calcium azelate is considered ‘not flammable’ based on the preliminary screening test according to the UN N.1 method.

Calcium azelate is not a self-heating substance based on the study according to the UN N.4 method. 

Key value for chemical safety assessment

Flammability:

not classified

Additional information

A study to determine the flammability of calcium azelate was conducted according to the UN N.1 guideline (Volic 2019). The preliminary screening test was performed for the determination of the flammability of the test item. No propagation of combustion of the test item along 200 mm length of the pile within 2 minutes was observed. According to the guidelines, the performance of the burning rate test was not required. Based on the results obtained, the test item is considered ‘not flammable’.

A study to determine self-heating properties of calcium azelate was conducted following the UN N.4 guideline (Volic 2019). The test item was exposed to air at 140°C for 24 hours in a temperature controlled laboratory oven and the temperature of the sample and the oven were recorded with time intervals of 5 minutes. No spontaneous ignition occurred and no exothermic effect of the test item was observed, therefore the test item is considered ‘not a self-heating substance’. 

Both studies were conducted according to standard guidelines and are GLP-compliant and therefore are considered as reliable without restrictions (Klimisch 1).

Justification for classification or non-classification

Calcium azelate is considered to be ‘not flammable’ as no propagation of combustion of the test item along 200 mm length of the pile within 2 minutes was observed in the preliminary screening test conducted according to the UN N.1 guideline (Volic 2019). Therefore, calcium azelate does not need to be classified for flammability.

Based on the results of the study conducted according to the UN N.4 method (Volic 2019), calcium azelate does not need to be classified as a self-heating substance.