Barium chloride

Barium chloride is a chemical substance. It is among the most important salts of barium. It is soluble in water. It is a poison. When it is heated, it gives a yellow or green color to the flame. It is hygroscopic, meaning that it attracts water from the air. It is mainly used to purify brine but applications include fireworks.

Barium chloride

Names
Other names Barium muriate Muryate of Barytes[1] Barium dichloride
Identifiers
CAS Number	10361-37-2 Y 10326-27-9 (dihydrate) N
3D model (JSmol)	Interactive image
ChemSpider	23540 Y
ECHA InfoCard	100.030.704
EC Number	233-788-1
PubChem CID	25204
RTECS number	CQ8750000 (anhydrous) CQ8751000 (dihydrate)
UNII	0VK51DA1T2 Y
CompTox Dashboard (EPA)	DTXSID7044508
SMILES [Ba+2].[Cl-].[Cl-]
Properties
Chemical formula	BaCl2
Molar mass	208.23 g/mol (anhydrous) 244.26 g/mol (dihydrate)
Appearance	White solid
Density	3.856 g/cm3 (anhydrous) 3.0979 g/cm3 (dihydrate)
Melting point	962 °C (1,764 °F; 1,235 K) (960 °C, dihydrate)
Boiling point	1,560 °C (2,840 °F; 1,830 K)
Solubility in water	31.2 g/100 mL (0 °C) 35.8 g/100 mL (20 °C) 59.4 g/100 mL (100 °C)
Solubility	soluble in methanol, insoluble in ethanol, ethyl acetate[2]
Magnetic susceptibility (χ)	-72.6·10−6 cm3/mol
Structure
Crystal structure	orthogonal (anhydrous) monoclinic (dihydrate)
Coordination geometry	7-9
Thermochemistry
Std enthalpy of formation ΔfHo298	−858.56 kJ/mol
Hazards
Main hazards	Acute Toxic
NFPA 704	0 3 0
Flash point	Non-flammable
U.S. Permissible exposure limit (PEL)	TWA 0.5 mg/m3[3]
Related compounds
Other anions	Barium fluoride Barium bromide Barium iodide
Other cations	Beryllium chloride Magnesium chloride Calcium chloride Strontium chloride Radium chloride Lead chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Barium chloride is toxic. Sodium sulfate may be an antidote.