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Physical & Chemical properties


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Description of key information

Barium di(acetate) can be designated as non-flammable, to have no pyrophoric properties and does not emit flammable gases in contact with water.

Key value for chemical safety assessment

not classified

Additional information

Flammability of solids

In accordance with section 1 of REACH Annex XI, the study does not need to be conducted. Testing of flammability is not considered to be required for barium di(acetate). The metal salt contains of barium cations (in an already oxidised state (2+) which is the stable oxidized form) and acetate anions which decomposes under heat only to CO2 (>225 °C) as well as hydroxyl ions. Therefore, it can safely be assumed that barium di(acetate) is neither combustible nor flammable. Long-term industrial handling experience does not indicate any concern for flammability. In consequence, testing for flammability is not justified.


Flammability in contact with water

Barium di(acetate) in water leads to the formation of acetic acid. Acetic acid is known from literature as being flammable (R10: Flammable). However, since acetic acid is very soluble in water (1,000 g/L at room temperature*) and the calculated Henry`s law constant is 9.3*10-2 Pa m3/mol* (water solubility and vapour pressure (1570 Pa*) of acetic acid) barium di(acetate) could be regarded as non-volatile and therefore as none flammable in contact with water and must not be classified as such. The conduct of further experimental verification is not justified (in accordance with section 1 of REACH Annex XI).

*DAR (2008): Acetic Acid, Volume 3, Annex B, part 1, B.1-B.5, August 2008

Pyrophoric properties:

This substance 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 kationic compound of barium di(acetate), the Ba2+ is present in stable oxidation state. Furthermore, there is not information available in the literature that a metal acetate is flammable in contact with air. Furthermore, long-term industrial experience in handling shows that the substance does not ignite in contact with air. Hence, it can safely be concluded that barium di(acetate) is stable in air.

Justification for classification or non-classification

Barium di(acetate) does not need to be classified according to CLP Regulation (EC) No 1272/2008 since it is not highly flammable.