Barium hydroxide ( barium ice) is an inorganic compound that exhibits strong basic properties . The chemical formula is Ba (OH) 2 . A saturated aqueous solution of barium hydroxide is called barite water .
Barium hydroxide | |
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Are common | |
Systematic name | Barium hydroxide |
Chem. formula | Ba (OH) 2 |
Physical properties | |
condition | solid |
Molar mass | 171.35474 g / mol |
Density | 4.5 (20 ° C) |
Thermal properties | |
T. melt. | 408 ° C |
T. Kip. | 780 ° C |
T. | 1000 ° C |
Education enthalpy | -950 kJ / mol |
Chemical properties | |
Water solubility | 3.89 (20 ° C) |
Classification | |
Reg. CAS number | 17194-00-2 |
Pubchem | |
Reg. EINECS number | |
SMILES | |
Inchi | |
RTECS | CQ9200000 |
CHEBI | |
UN number | <- UN number -> |
Chemspider | |
Security | |
Toxicity | Acrid, poisonous. |
Content
Properties
Barium hydroxide under standard conditions is a colorless crystals . Hygroscopic. Not soluble in alcohol , but soluble in water . Forms crystalline hydrates with one, two, seven and eight water molecules. Barium hydroxide is toxic, the MPC is 0.5 mg / m³.
Getting
1. Interaction of metallic barium with water:
2. The interaction of barium oxide with water:
3. Interaction of barium sulfide with hot water :
Chemical Properties
1. Interaction with acids to form salt and water ( neutralization reaction ) :
2. Interaction with acid oxides to form salt and water :
3. Interaction with amphoteric oxides
4. Interaction with salts
Application
Barium hydroxide in the form of barite water is used as a reagent for SO 4 2– and CO 3 2– ( sulfate and carbonate ions), for purification of vegetable oils and animal fats , as a component of lubricants, to remove SO 4 2– ( sulfate ions ) from industrial solutions , obtaining barium salts, as well as rubidium and cesium hydroxides from their sulfates and carbonates .
Notes
Literature
- Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1988. - Vol. 1 (Abl-Dar). - 623 s.