Orthoperiodic acid

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:

1 August 2012 - 23 August 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

other: read-across target

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

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

The test material pile failed to ignite during the 2 minutes that the Bunsen flame was applied.

Interpretation of results:

other: Not classified in accordance with EU criteria

Conclusions:

Under the conditions of this study, the test material has been determined to be not highly flammable as it failed to ignite in the preliminary screening test.

Executive summary:

The flammability of the test material was investigated in accordance with the standardised guideline EU Method A.10 under GLP conditions.

In a preliminary test, an air-rich Bunsen flame was applied to a pile of the test material for two minutes. The pile failed to ignite.

Under the conditions of this study, the test material has been determined to be not highly flammable as it failed to ignite in the preliminary screening test.

Reference 2

Endpoint:

flammable solids

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

supporting study

Justification for type of information:

Read-across to structurally similar substance sodium periodate (CAS 7790-28-5). Sodium periodate is the sodium salt of periodic acid.

Reason / purpose for cross-reference:

read-across source

Key result

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

The test material pile failed to ignite during the 2 minutes that the Bunsen flame was applied.

Reference 3

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

Reference 4

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 5

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16 March 2018 to 11 December 2018

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

Test procedure:

burning rate test: preliminary screening test

Burning time:

1 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

The flame of the gas burner did ignite the test material pile. The test material melted, fizzed, burned with an orange flame and turned into a brown residue. Pink smoke was observed. After removal of the ignition source, the flame extinguished after 1 second and no propagation of combustion was observed. 

Interpretation of results:

other: Not classified according to EU criteria.

Conclusions:

Under the conditions of the test, the test material is considered ‘not flammable’.

Executive summary:

The flammability of the test material was assessed according to UN Test N.1 in accordance with the principles of GLP.

The preliminary screening test was performed for the determination of the flammability of the test material.

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

Description of key information

Under the conditions of the test, the test material is considered ‘not flammable’.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Key Study: Lammers (2019)

The flammability of the test material was assessed according to UN Test N.1 in accordance with the principles of GLP.

The preliminary screening test was performed for the determination of the flammability of the test material. The study was assigned a reliability score of 1 in accordance with the principles for assessing data quality as outlined by Klimisch et al. (1997).

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

Flammability (Solids): Supporting Information

The flammability of the read across substance, sodium periodate, was investigated in accordance with the standardised guideline EU Method A.10 under GLP conditions. The study was assigned a reliability score of 1 in accordance with the principles for assessing data quality as outlined by Klimisch et al (1997), however, since the data is available on a read across substance an overall reliability score of 2 is considered appropriate. Sodium periodate is considered to be a suitable substance for read across since it is the sodium salt of periodic acid.

In a preliminary test, an air-rich Bunsen flame was applied to a pile of the test material for two minutes. The pile failed to ignite.

Under the conditions of this study, the test material has been determined to be not highly flammable as it failed to ignite in the preliminary screening test.

Flammability (Pyrophoricity and Contact with Water)

In accordance with Section 1 of Annex XI of the Regulation (EC) 1907/2006 (REACH), it is considered justified to omit the flammability (contact with water) study and the pyrophoric properties of solids and liquids study (both required in Section 7.10 of Annex VII) as there is no evidence of the test material either spontaneously igniting in air at room temperature or exhibiting flammable properties in contact with water.

Justification for classification or non-classification

In accordance with the criteria for classification as defined in Annex I, Regulation (EC) 1272/2008, the test material does not require classification for flammability.