2-amino-6-methyl-1,2,4-triazolo[1,5-a]pyrimidin-5(1H)-one

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

pyrophoric solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 September 2015 - 29 October 2015

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.2 (Test method for pyrophoric solids)

Deviations:

no

GLP compliance:

yes

Key result

Test procedure:

ignition time on contact with air

Temp.:

20 °C

Remarks on result:

no ignition within 5 minutes

Room temperature = 20 °C.

where N =   No signs of ignition during dropping or throughout the 5 minute observation period.

 

Test Number:	1.	2.	3.	4.	5.	6.
Observation:	N	N	N	N	N	N

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The test substance does not spontaneously ignite on contact with air at ambient temperatures. In accordance with the the criteria of UN Test N.2, the test substance is not classified as pyrophoric solid.

Executive summary:

The pyrophoric properties of the test item was determined using UN Test N.2. The test substance does not spontaneously ignite on contact with air at ambient temperatures throughout the 5 minute observation period.  In accordance with the the criteria of UN Test N.2, the test substance is not classified as pyrophoric solid.

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:

11 September 2015 - 29 October 2015

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

Test procedure:

step 1

Remarks on result:

no reaction with water observed

Test procedure:

step 2

Remarks on result:

no reaction with water observed

Test procedure:

step 3

Remarks on result:

no reaction with water observed

Test procedure:

step 4

Remarks on result:

no reaction with water observed

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 reactivity of the test substance with water was determined using UN Test N.5. 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.

Reference 3

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 September 2015 - 29 October 2015

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.1 (Test method for readily combustible solids)

Deviations:

no

GLP compliance:

yes

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

other: The test substance melted and ignited on application of the ignition source, but self-extinguished on its removal. It did not propagate combustion and the burning time over 200mm could not be determined.

The preliminary test showed that the test substance did not propagate combustion and therefore a full series of burning tests were not conducted.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The preliminary test showed that the test substance did not propagate combustion and therefore in accordance with the criteria of UN Test N.1, the test substance is not classified as a flammable solid.

Executive summary:

A preliminary screening test was conducted to determine whether or not the sample ignites and propagates combustion over 200 mm within 2 minutes, either by burning with a flame or by smouldering. The test substance did not propagate combustion and therefore a full series of burning tests were not conducted. In accordance with the criteria of UN Test N.1, the test substance is not classified as a flammable solid.

Reference 4

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 September 2015 - 29 October 2015

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.4 (Test method for self-heating substances)

Deviations:

no

GLP compliance:

yes

Key result

Test procedure:

100 mm sample cube at 140°C

Max. temp. reached:

140

Induction time (h):

24

Result:

negative outcome (no effect observed)

A graph of temperature versus time (hours) was prepared with the raw data. The graph showed that the test substance exhibited no exothermic activity, with the temperature at the centre of the sample settling out at the same level as the oven air temperature at approximately 8 hours. As this constitutes a negative result, no further testing was necessary.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The test substance showed no signs of self-heating when tested in a 100 mm cubic wire mesh container at 140°C. In accordance with the criteria of UN Test N.4, the test substance is not classified as a self-heating substance.

Executive summary:

The self-heating properties of the test substance was determined using UN Test N.4. The test substance showed no signs of self-heating when tested in a 100 mm cubic wire mesh container at 140°C. In accordance with the criteria of UN Test N.4, the test substance is not classified as a self-heating substance.

Description of key information

Flammability: The test substance did not propagate combustion and therefore a full series of burning tests were not conducted. In accordance with the criteria of UN Test N.1, the test substance is not classified as a flammable solid.

Pyrophoric Properties: The test substance does not spontaneously ignite on contact with air at ambient temperatures throughout the 5 minute observation period.  In accordance with the the criteria of UN Test N.2, the test substance is not classified as pyrophoric solid.

Water Reactivity: 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.

Self-heating: The test substance showed no signs of self-heating when tested in a 100 mm cubic wire mesh container at 140°C. In accordance with the criteria of UN Test N.4, the test substance is not classified as a self-heating substance..

Key value for chemical safety assessment

Flammability:

not classified