Sodium methanolate

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:

02.2022 - 04.2022

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:

not specified

GLP compliance:

no

Key result

Test procedure:

step 4

Max. rate of gas release:

10 L/kg h

Remarks on result:

easy reaction with water but no spontaneous ignition of the evolved gas

Test procedure:

step 1

step 2

step 3

Remarks on result:

easy reaction with water but no spontaneous ignition of the evolved gas

Interpretation of results:

not classified based on GHS criteria

Remarks:

results show that a classification according to substances and mixtures which in contact with water emit flammable gases is not warranted.

Conclusions:

Sodium methanolate powder easily reacts in contact with water and evolves methanol vapor without spontaneous ignition of the evolved vapor. No flammable gas is emitted.

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:

06 Apr - 20 May 2010

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)

Version / remarks:

''Recommendation on the Transport of Dangerous Goods'', Manual of Tests & Criteria, fourth revised edition, test N.5, SOP SPZ-106

Deviations:

no

GLP compliance:

no

Test procedure:

step 1

Max. rate of gas release:

0.72 L/kg h

Identity of evolved gas:

not applicable as no gas evolved

Test procedure:

step 2

Max. rate of gas release:

0.56 L/kg h

Identity of evolved gas:

not applicable as no gas evolved

Test procedure:

step 3

Max. rate of gas release:

0.72 L/kg h

Identity of evolved gas:

not applicable as no gas evolved

In Step 1 and Step 2 (Preliminary test) there was no evolution of gas and no ignition observed.

Results for the maximum rate of gas evolution:

The test procedure was performed in triplicate.

Test no.1: 0.72 l/(kg∙h)

Test no.2: 0.56 l/(kg∙h)

Test no.3: 0.72 l/(kg∙h)

The highest amount of gas was 18 ml and this result was obtained within the first hour of measuring. Within the remaining time period of 6 h (prescribed time of 7 h in total) no further gas evolution occurred.

 

From the results (< 1 l/(kg∙h)) it is obvious that the substance does not fulfil the criteria of the UN transport class 4.3.

Conclusions:

no evolution of gas and no ignition when the substance in contact with water.

Reference 3

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1989

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

Principles of method if other than guideline:

The study satisfies also the requirements of the "orange book" (UN recommendations for the Transport of dangerous goods)

GLP compliance:

no

Test procedure:

burning time (test type not further specified)

Remarks:

or specified in description of method

Burning time:

>= 7 - <= 8 s

Tests with a wet zone showed, that the propagation of the flame was not stopped by the moistened substance.

Interpretation of results:

Category 1 (flammable solids) based on GHS criteria

Conclusions:

A classification according to GHS (2.6) is necessary (catogery 1).

Reference 4

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

1989

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.12 (Flammability (Contact with Water))

Deviations:

no

GLP compliance:

no

Max. rate of gas release:

11 other: Minimum 11 L/kg.s

Identity of evolved gas:

as specified:

Remarks:

gaseous methanole

Remarks on result:

easy reaction with water but no spontaneous ignition of the evolved gas

In contact with water, gaseous methanole is formed (> 1l/kg*s) without self ignition. Other studies report self ignition.

The explosion limits cited from: OECD SIDS Methanol (2004).

Lower explosion limit: ca. 5.5 %

Upper explosion limit: ca. 55 %

Interpretation of results:

Category 1 (flammable solids) based on GHS criteria

Reference 5

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Guideline:

other: no data

Principles of method if other than guideline:

assumed: EU A.10.

GLP compliance:

not specified

Test procedure:

burning time (test type not further specified)

Remarks:

or specified in description of method

Remarks on result:

other: no burning rate cited

flammable when exposed to heat or flame.

Reference 6

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

Method: other: 67/548/EWG, Appendix V, A.10

Interpretation of results:

Category 1 (substances or mixtures which in contact with water release flammable gases which may ignite spontaneously) based on GHS criteria

Reference 7

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 8

Endpoint:

self-heating substances / mixtures

Data waiving:

study technically not feasible

Justification for data waiving:

other:

Description of key information

Highly flammable. Burning time 7-8 s. Positive outcome for self-heating.

Key value for chemical safety assessment

Flammability:

flammable

Additional information

No ignition on contact with air. 

Tests with a wet zone showed that the propagation of the flame was not stopped by the moistened substance. On contact with water substance liberates highly flammable gases. Easy reaction with water but no spontaneous ignition of the evolved gas.

Justification for classification or non-classification

Classification according to regulation (EC) 1272/2008, Annex VI, No. 2.7.2.3: Cat. 1, H228, Danger, flammable solid, and Self-Heat.1 (H251).