Barium carbonate

Barium carbonate is the inorganic compound with the formula BaCO3. Like most alkaline earth metal carbonates, it is a white salt that is poorly soluble in water. It occurs as the mineral known as witherite. In a commercial sense, it is one of the most important barium compounds.

Barium carbonate
Names
Other names
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.007.426
EC Number
  • 208-167-3
RTECS number
  • CQ8600000
UNII
UN number 1564
  • InChI=1S/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 Y
    Key: AYJRCSIUFZENHW-UHFFFAOYSA-L Y
  • InChI=1/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
    Key: AYJRCSIUFZENHW-NUQVWONBAT
  • [Ba+2].[O-]C([O-])=O
  • C(=O)([O-])[O-].[Ba+2]
Properties
BaCO3
Molar mass 197.34 g/mol
Appearance white crystals
Odor odorless
Density 4.286 g/cm3
Melting point 811 °C (1,492 °F; 1,084 K)
polymorphic transformation
Boiling point 1,450 °C (2,640 °F; 1,720 K)
decomposes from 1360 °C
16 mg/L (8.8°C)
22 mg/L (18 °C)
24 mg/L (20 °C)
24 mg/L (24.2 °C)
2.58·10−9
Solubility decomposes in acid
insoluble in methanol
-58.9·10−6 cm3/mol
1.676
Structure
orthorhombic
Thermochemistry
85.35 J/mol·K
112 J/mol·K
-1219 kJ/mol
-1139 kJ/mol
Hazards
GHS labelling:
Warning
H302
NFPA 704 (fire diamond)
2
0
0
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
418 mg/kg, oral (rat)
Safety data sheet (SDS) ICSC 0777
Related compounds
Other cations
Beryllium carbonate
Magnesium carbonate
Calcium carbonate
Strontium carbonate
Radium carbonate
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
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