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Physical & Chemical properties

Flammability

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Description of key information

Potassium tetrafluoroborate is non flammable.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

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). Furthermore, long-term industrial experience in handling shows that the substance does not ignite in contact with air (in accordance with section 1, Annex XI of regulation (EC) 1907/2006 ).

Testing of 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 (in accordance with section 1, Annex XI of regulation (EC) 1907/2006 ).

Testing of flammability is not considered to be required for inorganic metal salts in which (i) the cation is in its highest possible oxidation state (potassium and boron) and which therefore is incapable of further reaction with oxygen, and (ii) the anionic component (fluoride) is similarly not capable of further reaction with oxygen. 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).

Justification for classification or non-classification

Based on the chemical structure of the substance and experience in its handling, classification of the substance as flammable is not warranted in accordance with EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.