Barium Hydroxide, Octahydrate

Name:
Barium Hydroxide, Octahydrate
Detailed information:

Chemistry name:	barium hydrate; barium octahydrate; caustic baryta
M Formula:	Ba(OH)2•8H2O
Properties:
White powder or crystals. D 2.18, mp 78C (losing its water of crystallization), mp (anhydrous Ba(OH)2) 408C. Absorbs carbon dioxide from air. Keep well stoppered!! Soluble in water, alcohol, and ether.
Derivation:
(1) By dissolving barium oxide in water with subsequent crystallization, (2) By precipitation from an aqueous solution of the sulfide by caustic soda, (3) By heating barium sulfide in earthenware retorts into which a current of moist carbonic acid is passed, after which superheated steam is passed over the resulting heated carbonate.
Impurities:
Iron and calcium in commercial grades.
Grade:
Technical (crystals or anhydrous powder), CP, ACS reagent.
Hazard:
See .
Use:
Organic preparations, barium salts, analytical chemistry.

See Barium Hydroxide, Monohydrate.