Praseodymium trinitrate

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012-02-28

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (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:

In a first trial the test item dissolved in its hydration water which boiled, and then reddened at the contact of the flame. Neither propagation nor ignition was recorded. This was repeated in a second trial showing identical results. No main test was performed.

Interpretation of results:

GHS criteria not met

Conclusions:

The substance was concluded from the EC A.10 test not to be flammable in contact with a flame.

Description of key information

Following a GLP study in accordance with EC test method A.10, praseodymium trinitrate is concluded to be not highly flammable (Colombies, 2012). Furthermore, based on day to day handling of the substance, praseodymium trinitrate is concluded not to have pyrophoric properties nor to be flammable in contact with water. In addition, since no self-ignition temperature was observed up to 400°C (see 4.12), the substance is considered to be not self-heating.

Key value for chemical safety assessment

Flammability:

not classified

Justification for classification or non-classification

Pyrophoricity: In the daily use and handling of praseodymium 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 praseodymium trinitrate

has pyrophoric properties.

Flammability in contact with water: Under conditions where praseodymium 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 praseodymium trinitrate is flammable in contact with water.

Flammability: From a flammability test (EC A.10) praseodymium trinitrate is concluded to be not highly flammable (Colombies, 2012). This results in an absence of classification both under DSD and CLP systems.

Self-heating: Based on the fact that no self-ignition temperature was observed up to 400°C (see section 4.12), the substance is considered to be non self-heating