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Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental phase: 17 October 2017 to 23 March 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.5 (Test method for substances which in contact with water emit flammable gases)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Test procedure:

step 1

Remarks on result:

no reaction with water observed

Key result

Test procedure:

step 2

Remarks on result:

no reaction with water observed

Key result

Test procedure:

step 3

Remarks on result:

no reaction with water observed

Key result

Test procedure:

step 4

Max. rate of gas release:

0.22 L/kg h

Identity of evolved gas:

unknown

Remarks on result:

other: Gas generation observed but no spontaneous ignition occurred.

Gas generated in Test 4 was analysed using a Mass Spectrometer. No flammable gases were detected.

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance did not emit any flammable gases.

Executive summary:

Introduction

The ability of the test substance to emit flammable gasses when in contact with water was determined in accordance with the procedure described UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Test N.5

 

Method

The test is designed to determine the ability of a substance to emit flammable gases on contact with water by bringing it into contact with water under a variety of conditions. The method consists of three preliminary tests to determine if a violent reaction with water occurs and a final test to determine the quantity of gas generated. 

Result

The test substance did not emit flammable gases in either the preliminary tests or confirmatory test.

Conclusion

The test substance did not emit flammable gases in contact with water.

Reference 2

Endpoint:

pyrophoric liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental phase: 17 October 2017 to 23 March 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.3 (Test method for pyrophoric liquids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Test procedure:

ignition time on contact with air

Remarks on result:

no ignition within 5 minutes

Key result

Test procedure:

effect on filter paper

Temp.:

25 °C

Relative air humidity (%):

50

Remarks on result:

no charring

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance is not pyrophoric.

Executive summary:

Introduction

The pyrophoricity of the test substance was assessed using the procedure in UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Test N.3.

Method

Two separate tests are conducted. The first involves filling a porcelain cup of about 100 mm diameter with diatomaceous earth or silica gel to a height of 5 mm. 5 mL of the substance to be tested is added and it is observed if the substance ignites within 5 minutes. The test is performed six times unless a positive result is obtained earlier. If the result is negative then the second test is conducted. This involves placing 0.5 mL of the substance in the centre of a dry filter paper at 25 ± 2°C and a relative humidity of 50 ± 5 %. It is observed if ignition or charring occurs within five minutes. The test is performed three times unless a positive result is obtained earlier.

Results

No ignitions were observed during the six porcelain cup tests or the three filter paper tests.

Conclusion

The test substance is not pyrophoric.

Description of key information

Flammability of the test substance.

Key value for chemical safety assessment

Flammability:

not classified