1 Physical and Chemical Properties
Physical Properties
White crystalline or granular powder. Bitter and salty. Slightly hygroscopic . At 100 ℃ loses crystal water , but placed in the wet air again absorb two molecules of water of crystallization . Soluble in water , soluble in methanol , insoluble in ethanol, ethyl acetate and acetone. The relative density of 3.86 . Melting point 963 ℃, boiling point 1560 ℃, refractive index 1.635 . Barium yellow- green flame reaction
Chemical properties
Barium chloride is commonly used laboratory analytical reagents , mainly for precipitation sulfate , barium sulfate to produce insoluble precipitate .
2 Preparation Method Editor
Reduction on industrial carbon barite get barium sulfide , barium sulfide dissolved in concentrated hydrochloric acid or calcium chloride that was saturated barium chloride . This is the method commonly used , calcium and strontium can be easily removed impurities
3 Use the Edit Profile
Mainly used for metal heat treatment, barium salt manufacturing, electronic instruments , also used for machining heat treatment agent. Determination of sulfate and selenium salts , etc. , chromatography, drip Determination of platinum , water softener . Fabric dyeing .
4 Storage Condition
Store in a cool , ventilated warehouse. Keep away from fire and heat. Packing seal. Should oxidants , acids, food chemicals stored separately and avoid mixing reservoir.
5 hazardous editor
Barium is a virulent , 0.2 ~ 0.5g ingestion can cause poisoning, lethal dose of 0.8 ~ 0.9g. If found poisoned , magnesium or sodium -speed service , taking gastric lavage , enema, vomiting and other measures. Rapid medical treatment, barium poisoning obvious symptoms of hypokalemia .  LD50 approximately 118mg/kg.