4-methylcyclohexanone

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a liquid

Reference 2

Endpoint:

pyrophoric liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-10-13 to 2016-02-10

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

Key result

Test procedure:

effect on filter paper

Result:

> 5 min

Temp.:

20 °C

Remarks on result:

no ignition within 5 minutes

Key result

Test procedure:

other: diatomaceous earth

Result:

> 5 min

Temp.:

20 °C

Remarks on result:

no ignition within 5 minutes

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The test substance does not spontaneously ignite on contact with air or ignite or char filter paper at ambient temperatures.
In accordance with the criteria of UN Test N.3, the test substance is not classified as a pyrophoric liquid.

Executive summary:

The test was carried out in accordance with UN Test N.3: “Test Method for Pyrophoric Liquids”, United Nations Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 5th Revised Edition, 2009.

The test substance was exposed to air at ambient temperature by pouring approximately 5 ml of the material on to diatomaceous earth from a height of 5 - 10 cm. The sample wass observed during dropping and for a further 5 minutes after settling, for any signs of ignition. The test was carried out six times.

No ignition occured, so approximately 0.5 ml of the test substance was delivered from a syringe onto an indented filter paper. The filter paper was observed for any signs of ignition or charring within 5 minutes of adding the test substance. The test wass carried out three times.

The test substance does not spontaneously ignite on contact with air or ignite or char filter paper at ambient temperatures.

(ii) In accordance with the criteria of UN Test N.3, the test substance is not classified as a pyrophoric liquid.

Reference 3

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-10-13 to 2016-02-10

Reliability:

1 (reliable without restriction)

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

Key result

Test procedure:

step 1

step 2

step 3

step 4

Max. rate of gas release:

0 L/kg h

Identity of evolved gas:

not applicable as no gas evolved

Remarks on result:

no reaction with water observed

Results:

Step 1: No gas evolved.

Step 2: No gas evolved.

Step 4: Sample preparation: tested as received.

Room temperature: 20 - 21°C.

Water temperature: 21°C.

No gas was evolved on contact with water over a period of 7 hours in each of the three tests.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The test substance does not evolve flammable gases on contact with water.
In accordance with the criteria of UN Test N.5, the test substance is not classified as a substance which, in contact with water, emits flammable gases.

Executive summary:

The test was carried out in accordance with the UN Test N.5: “Test Method for Substances Which in Contact with Water Emit Flammable Gases”, United Nations Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 5th Revised Edition, 2009.

Three preliminary screening tests, were carried out to determine whether or not any gas is evolved on contact with water and if so, whether or not it spontaneously ignites:

Step 1: A small quantity of the test substance (one or two drops) was placed in a trough containing distilled water.

Step 2: A small quantity of the test substance (one or two drops) was placed on the centre of a piece of filter paper floating on the surface of distilled water.

Step 3: not applicable for liquids.

There was no positive result in any of the screening tests, therefore the following test, Step 4, was carried out in triplicate:

Step 4: 10 - 20 ml of distilled water was added to ∼ 10 g of the test substance. Any evolved gases are collected and the quantities measured at hourly intervals for a period of 7 hours.

Results:

Step 1: No gas evolved.

Step 2: No gas evolved.

Step 4: Sample preparation: tested as received.

Room temperature: 20 - 21°C.

Water temperature: 21°C.

No gas was evolved on contact with water over a period of 7 hours in each of the three tests.

Description of key information

The test substance does not spontaneously ignite on contact with air or ignite or char filter paper at ambient temperatures, in UN Test N.3. In UN Test N.5 the test substance does not evolve flammable gases on contact with water. The substance is a liquid, and the flashpoint was tested according to ASTM D93 in a Pensky-Martens closed-cup apparatus. The flashpoint was found to be 52°C.

Key value for chemical safety assessment

Flammability:

flammable

Justification for classification or non-classification

Substance did not spontaneously ignite on contact with air or ignite or char filter paper at ambient temperatures. The substance does not evolve flammable gases on contact with water. The substance is a liquid with flashpoint of 52.0°C and boiling point of 170°C. Therefore in accordance with the criteria set out in Regulation 1272/2008, Annex I, Table 2.6.1, 4 -methylcyclohexanone is classified as a flammable liquid, Category 3.