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Physical & Chemical properties

Flammability

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Description of key information

Highly flammable solid (A10): No (waiving and supporting study)

In contact with water substance liberates highly flammable gases (A12): No (waiving )

Pyrophoric substance (A13): No (waiving)

Key value for chemical safety assessment

Flammability:
not classified

Additional information

A.10 Flammability of solids:

In accordance with section 1, Annex XI of Regulation (EC) 1907/2006, the study does not need to be conducted. Testing of flammability is not considered to be required for inorganic metal salts in which (i) the cation is in its highest possible (stable) oxidation state and which therefore is incapable of further reaction with oxygen, and (ii) the anionic component is similarly not capable of further reaction with oxygen.

The cation (2+) is not in its highest possible oxidation state (4+), but the ionic and anionic compounds of tin difluoride are present in stable oxidation states. Furthermore, in the GESTIS Substance database was stated that tin difluoride is a "non-comustible solid". This substance can thus be designated as non-flammable. (Guidance on information requirements and chemical safety assessment Chapter R.7a: Endpoint specific guidance, section R.7.1.10.3).

A.12 Flammability in contact with water:

Testing for flammability in contact with water is not considered to be required, because the substance does not contain groups that might lead to a reaction with water or damp air, leading to the development of dangerous amounts of gas or gases which may be highly flammable. Furthermore, long-term industrial experience in practical handling of the substance shows that it does not react with water, and recent experimental testing for water solubility has also not reported any formation of gases (cf. section 1, Annex XI of Regulation (EC) 1907/2006).

A.13 Pyrophoric properties:

Testing for pyrophoric properties of solids is not considered to be required, since this substance is stable at ambient temperature. This substance also does not contain any chemical groups that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (circa 20 °C). The ionic and anionic compounds of tin difluoride are present in stable oxidation states. Furthermore, long-term industrial experience in handling shows that the substance does not ignite in contact with air (cf. section 1, Annex XI of Regulation (EC) 1907/2006).

Justification for classification or non-classification