Pentaboron sodium octaoxide

Flammability

Link to relevant study record(s)

Reference

Reference 1

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 2

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

experimental study

Adequacy of study:

key study

Study period:

23/06/2010 to 25/06/2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

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reference to same study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.5 (Test method for substances which in contact with water emit flammable gases)

Deviations:

not specified

GLP compliance:

yes

Test procedure:

step 2

Max. rate of gas release:

0.11 L/kg h

Remarks on result:

no reaction with water observed

Test procedure:

step 3

Max. rate of gas release:

0.1 L/kg h

Remarks on result:

no reaction with water observed

Test procedure:

step 1

Max. rate of gas release:

0.11 L/kg h

Remarks on result:

no reaction with water observed

Full test results:

Run	Powder Quantity (g)	Max. Rate of Gas Generation (L.hr-1.kg-1)	Ignition/No ignition
1	25	0.11	No ignition
2	25	0.11	No ignition
3	25	0.10	No ignition

The gas was not tested for flammability

Sodium pentaborate granular was not classified as a material of Class 4.3.

Interpretation of results:

other: EU GHS cirteria not met

Conclusions:

The sample does not undergo spontaneous ignition when a gas is evolved and in addition the gas evolution is lower than 1 liter per kilogram of substance and hour.

Executive summary:

The substance/mixtures which in conctact with emit flammable gases test was performed according to UN Test N.5 under GLP compliance. The sample does not undergo spontaneous ignition when a gas is evolved and in addition the gas evolution is lower than 1 liter per kilogram of substance and hour.

Reference 3

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

15/06/2010 to 18/06/2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

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reference to same study

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reference to same study

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reference to same study

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reference to same study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)

Deviations:

not specified

GLP compliance:

yes

Result:

negative outcome (no effect observed)

Appearance before test: White crystalline solid (powder)

Appearance after test: The sample had hardened to a solid mass, with no change in size.

Interpretation of results:

other: EU GHS criteria not met

Conclusions:

No self ignition obeserved under the test condition (appearance before test: White crystalline solid (powder), appearance after test: The sample had hardened to a solid mass, with no change in size)

Executive summary:

Self-heating substances/mixtures test was performed according to UN manual of test and criteria Test N.4 under GLP compliance. No self ignition obeserved under the test condition (appearance before test: White crystalline solid (powder), appearance after test: The sample had hardened to a solid mass, with no change in size), therefore the substance does not need to be classified as self-heating substance.

Reference 4

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

15/06/2010 - 16/06/2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

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reference to same study

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reference to same study

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reference to same study

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reference to same study

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reference to same study

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reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

not specified

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Deviations:

not specified

Qualifier:

according to guideline

Guideline:

other: HSE Code of Physico-Chemical Properties 1982.

Deviations:

not specified

GLP compliance:

yes

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

Remarks:

Initially the sample slowly melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.

It was determined that sodium pentaborate granular should be classified as "not a highly flammable solid".

From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required.

Initially the sample slowly melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.

Interpretation of results:

other: EU GHS cirteria not met

Conclusions:

From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required. Initially the sample slowly melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.

Executive summary:

Flammability test was done according to EU method A.10 under GLP compliance. From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required. Initially the sample slowly melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.

Description of key information

Flammable solids

Flammability test was done according to EU method A.10 under GLP compliance. From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required. Initially the sample slowly melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.

Pyrophoric solids

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.

Self-heating substances/mixtures

Self-heating substances/mixtures test was performed according to UN manual of test and criteria Test N.4 under GLP compliance. No self ignition obeserved under the test condition (appearance before test: White crystalline solid (powder), appearance after test: The sample had hardened to a solid mass, with no change in size), therefore the substance does not need to be classified as self-heating substance.

Substances/mixtures which in contact with water emit flammable gases

The substance/mixtures which in conctact with emit flammable gases test was performed according to UN Test N.5 under GLP compliance. The sample does not undergo spontaneous ignition when a gas is evolved and in addition the gas evolution is lower than 1 liter per kilogram of substance and hour.

Key value for chemical safety assessment

Flammability:

not classified

Justification for classification or non-classification

The substance does not need to be classified for each of the flammability endpoints as there no ignition of the test item and no propagation of a flame was observed. Further no ignition of an generated gas was observed and also no gas evolution is greater than 1 liter per kilogramm substance per hour. In addition, no effects were shown during self-heating test (appearance before test: White crystalline solid (powder), appearance after test: The sample had hardened to a solid mass, with no change in size). The substance is also known to be stable in contact with air at room temperature for prolonged periods of time (days).