N-methyl-P,P-bis(2-methylaziridin-1-yl)phosphinamide

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02 May 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

The study was conducted according to an internationally recognised method. Test substance is adequately characterised. Therefore full validation applies.

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Version / remarks:

2015

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

Inspected on 27-28 October 2016 / Signed on 23 March 2017

Key result

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

Results:

Preliminary test:

Assay No 1:

The test item melted. Neither propagation nor ignition was observed.

Assay No 2:

The same observations as for the assay No. 1 were recorded.

Main test:

Taking into account the results obtained during the preliminary test, no main test was performed.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The test item was not classified as a flammable solid of Division 4.1 and thus was not assigned to any packing group, under the experimental conditions used.
According to EC No. 1272/2008 (CLP), the test item was not classified.

Executive summary:

The objective of the test was to determine the flammability of a solid item and the packing group of the test item according to UN N1 guideline.

The test item was not classified as a flammable solid of Division 4.1 and thus was not assigned to any packing group, under the experimental conditions used.

According to EC No. 1272/2008 (CLP), the test item was not classified.

Reference 2

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

the study does not need to be conducted because the organic substance does not contain metals or metalloids and hence, the classification procedure does not need to be applied

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with section 1 of REACh Annex XI, study for pyrophoric properties is deemed unnecessary based on the experience in handling, testing and use of the substance and based on the chemical structure of the substance that do not fall into critical categories described in ECHA guidance.
The tests performed on the substance and reported in this dossier showed that the substance clearly does not react with air. Moreover, a review of the chemical structure suggests that there are no chemical groups present in the substance that would imply pyrophoric properties. Therefore, the study was considered as unnecessary.

Reference 3

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the organic substance does not contain metals or metalloids and hence, the classification procedure does not need to be applied

the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with section 1 of REACh Annex XI, study for flammability if contact with water is deemed unnecessary based on the experience in handling, testing and use of the substance and based on the chemical structure of the substance that do not fall into critical categories described in ECHA guidance.
Moreover, a review of the chemical structure of the substance suggests that there are no chemical groups present that would imply flammability on contact with water. Therefore, the study was considered as unnecessary.

Reference 4

Endpoint:

self-heating substances / mixtures

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 completely molten at 160°C

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING:
According to the Guidance on the Application of the CLP Criteria, v5 of July 2017:
"the phenomenon of self-heating applies only to solids. The surface of liquids is not large enough for reaction with air and the test method is not applicable to liquids. Therefore liquids are not classified as self-heating…
Substances or mixtures with a low melting point (< 160 °C) should not be considered for classification in this class since the melting process is endothermic and the substance-air surface is drastically reduced. However, this criterion is only applicable if the substance or mixture is completely molten up to this temperature."
Considering that the test item is described as a solid with a melting point < 50°C (see endpoint 4.1 and 4.2) the test is considered as not necessary.

Description of key information

The test item was not classified as a flammable solid of Division 4.1 and thus was not assigned to any packing group, under the experimental conditions used.

According to EC No. 1272/2008 (CLP), the test item was not classified.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

A fully reliable experimental study, conducted according to UN N1 guideline is available.

It is considered as a key study, and the result is retained as key data.

Justification for classification or non-classification

The test item was not classified as a flammable solid of Division 4.1 and thus was not assigned to any packing group, under the experimental conditions used in the test UN N1.

Based on the chemical structure of the substance and experience in handling and use of the substance, no flammable properties are anticipated if contact with air or water, therefore studies were deemed unnecessary.

Finally considering that the substance is a solid with a low melting point (<60°C), no classification as self-heating substance is anticipated.