Barium hydroxide octahydrate
[name] barium hydrogenation octahydrate
"English name" Barium hydroxide octahydrate
[molecular weight] 315.48
[properties] colorless or white crystals.Soluble in water and methanol, soluble in ethanol.2.18 g/cm3 density, melting point 78 ℃, boiling point 108.5 ℃, aqueous solution is strongly alkaline, absorb carbon dioxide in the air, forming barium carbonate precipitation change solution to muddy.At 300 ℃ decomposition, when heated to 780 ℃ lose crystal water and become anhydrous barium hydroxide, poisonous.
[use] used as an analytical reagent, such as the preparation of a standard solution of alkali, the precipitant of CO2;Chemical industry is used to make other barium salts, organic barium compounds and barium base grease.The food industry is used for refined animal and vegetable oils, sucrose, beet;The daily chemical industry is used as the raw material for the production of perm.The oil industry is used as a multipotent additive;The glass honing industry is used as the raw material for producing glass and enamel.In addition, it is also used as a treatment agent for silk and rayon, the hard water softener of boiler, and neutralizing agent;It is used to make resin glue catalyst, iron ore sinter and synergist.Precipitate sulfate ions in water treatment.
[reagent grade indicator]
|Appearance||Premiun Grade||First Grade||Test result|
|Hydrochloric Acid Insoluble Matter% ≤||0.03||0.05||0.01|
|Sulfuric Acid Insoluble Matter%≤||0.2||0.5||——|
|Iodine reducing Matter%≤||0.01||0.05||——|