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Diss Factsheets

Physical & Chemical properties

Flammability

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Administrative data

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Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: The United Nations Document, Recommendation of the Transport of Dangerous Goods, Manual of Tests and Criteria (Test N.1.)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: HSE Code of Physico-Chemical Properties 1982.
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)
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

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 thick clear gel then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.

Interpretation of results:
GHS criteria not met
Conclusions:
The test item was not flammable under the conditions of the test.
Executive summary:

The test substance was assessed for flammability in a GLP study according to EU method A.10, The United Nations Document, Recommendation of the Transport of Dangerous Goods, Manual of Tests and Criteria (Test N.1.) and the HSE Code of Physico-Chemical Properties 1982. It was determined that ammonium pentaborate should be classified as "not a highly flammable solid".

Endpoint:
substances / mixtures which in contact with water emit flammable gases
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study
Qualifier:
according to guideline
Guideline:
other: United Nations Recommendations on the Transportation of Dangerous Goods, Manual of Tests and Criteria for substances of Class 4, Disivion 4.3
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)
Test procedure:
other: not further specified
Remarks on result:
no reaction with water observed

Full test results:

Run

Powder

quantity

Max. Rate of Gas Generation

(l.hr-1.kg-1)

Ignition/No ignition

1

25

0.15

No ignition

2

25

0.12

No ignition

3

25

0.06

No ignition

Interpretation of results:
GHS criteria not met
Conclusions:
It was determined that ammonium pentaborate is not classified as a material of class 4.3. The gas was not tested for flammability.
Executive summary:

The test substance was assessed in a GLP study according to United Nations Recommendations on the Transportation of Dangerous Goods, Manual of Tests and Criteria for substances of Class 4, Disivion 4.3. It was determined that ammonium pentaborate should be classified as "not a highly flammable solid".

Description of key information

The test substance was assessed for flammability in a GLP study according to EU method A.10, The United Nations Document, Recommendation of the Transport of Dangerous Goods, Manual of Tests and Criteria (Test N.1.) and the HSE Code of Physico-Chemical Properties 1982. It was determined that ammonium pentaborate should be classified as "not a highly flammable solid".

Further, a study was performed according to UN Recommendation on the Transportation of Dangerous Goods, Manual of Tests and Criteria for substances of Class 4, Division 4.3, on the emission of flammable gases on contact with water. It was determined that ammonium pentaborate is not classified as a material of class 4.3 (according to the UN Transport of Dangerous Goods Recommendation).

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Justification for classification or non-classification

The test material does not meet the criteria for classification and will not require labelling in accordance with European Regulation (EC) No. 1272/2008, amending Regulation EC No. 1907/2006 (REACH).