|Molecular formula||BaCO 3|
white, odorless solid
|External identifiers / databases|
|Molar mass||197,34 g · mol -1|
4.43 g cm −3 (at 20 ° C)
Decomposition> 1450 ° C
|ΔH f 0||
−1216 kJ mol −1
|As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .|
It crystallizes orthorhombically , space group Pmcn (space group no. 62, position 5) with the lattice parameters a = 5.313 Å , b = 8.896 Å and c = 6.428 Å. There are also high-temperature shapes with the space groups R 3 m (No. 166) and Fm 3 m (No. 225) known.
Barium carbonate is used, for example, as a raw material for the production of industrial glass and optical glass. It is also the end product in the detection of carbon dioxide with barite water . This proof is only possible because barium carbonate is sparingly soluble in water. It is used in small quantities in the vehicle industry for storage catalytic converters .
Barium carbonate is harmful to health. It has an irritant effect on mucous membranes, leads to functional disorders in the central and peripheral nervous system , muscle paralysis, gastrointestinal complaints and cardiovascular and pulmonary dysfunction.
- Entry on barium carbonate. In: Römpp Online . Georg Thieme Verlag, accessed on July 15, 2014.
- Entry on barium carbonate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
- PAETEC formula collection 2003 edition, page 116.
- JPR de Villiers: Crystal structures of aragonite, strontianite, and witherite. In: American Mineralogist , 56, 1971, pp. 758-766.
- KO Strømme: On the Crystal Structures of the high-temperature forms of strontium and barium carbonates and Structurally Related Compounds. In: Acta Chemica Scandinavica , 29, 1975, pp. 105-110, doi : 10.3891 / acta.chem.scand.29a-0105 .
- William Morton: Poisoning by barium carbonate , The Lancet , 1945,2: 738-739 ( doi : 10.1016 / S0140-6736 (45) 91071-3 ).