Gadolinium trinitrate

Flammability

Link to relevant study record(s)

Reference

Reference 1

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 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

other:

Reference 2

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 22 September 2014 to 18 November 2014

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 (incl. QA statement)

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

Preliminary test:

Assay N°1

A liquefaction of the test item at the contact of the flame was observed. Neither propagation, nor ignition was observed during the test period.

Assay N°2

The same observations as for the first assay were recorded.

Based on the results of the preliminary test, no main test was performed.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

According to the UN N.1 test, the substance was concluded not to be classified as a flammable solid of Division 4.1 and thus was not assigned to any packing group, under the experimental conditions used.

Executive summary:

The flammability of gadolinium trinitrate was investigated according to UN N.1 test method in compliance with GLP. The test item was not classified as a flammable solid.

Reference 3

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

other:

Description of key information

Gadolinium trinitrate is concluded to be not readily combustible according to the UN test method N.1 in agreement with GLP. Furthermore, based on experience in day-to-day handling and use, the test item can be concluded not to be pyrophoric and not to emit flammable gases in contact with water.

Key value for chemical safety assessment

Flammability:

not classified

Justification for classification or non-classification

Pyrophoricity:

In the daily use and handling of gadolinium trinitrate during which continuous exposure to air can occur, no spontaneous ignition is observed. The absence of structural alerts furthermore confirms that it is highly unlikely that gadolinium trinitrate has pyrophoric properties.

Flammability in contact with water:

Under conditions where gadolinium trinitrate is in contact with water, no ignition and/or liberation of flammable gases is observed. The absence of structural alerts furthermore confirms that it is highly unlikely that gadolinium trinitrate is flammable in contact with water.

Flammability:

An experimental study of reliability 1 according to Klimisch, performed in compliance with GLP and according to UN test method N.1, was selected as a key study. From this flammability test, gadolinium trinitrate is concluded to be not readily combustible. This results in an absence of classification under the CLP system.