237108

Barium carbonate

ACS reagent, ≥99%

• Synonym(s): Witherite
• Linear Formula: BaCO₃
• CAS Number: 513-77-9
• Molecular Weight: 197.34
• Beilstein: 7045119
• EC Number: 208-167-3
• MDL number: MFCD00003448
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752444
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• Assay: ≥99%; 99.0-101.0% (ACS specification)
• form: powder or chunks
• impurities: ≤0.002 meq/g water-soluble titr. base; ≤0.005% oxidizers; ≤0.015% insol. dil. HCl
• pH: 6.8 (37 °C, 3.67 g/L)
• anion traces: S^2-: ≤0.001%; chloride (Cl^-): ≤0.002%
• cation traces: Ca: ≤0.05%; Fe: ≤0.002%; K: ≤0.005%; Na: ≤0.02%; Sr: ≤0.7%; heavy metals (as Pb): ≤0.001%
• SMILES string: [Ba++].[O-]C([O-])=O
• InChI: 1S/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• InChI key: AYJRCSIUFZENHW-UHFFFAOYSA-L

Description

General description

Barium carbonate (BaCO₃) is an important alkaline-earth metal material in the production of barium salts, barium ferrite, pigments, ceramics, optical glass, and electric condensers. Additionally, it serves as a precursor to produce superconductors and ceramic materials.

Application

Barium carbonate is used:

• In the preparation of barium titanate using a mixture of BaCO₃ and titania (TiO₂) by solid-state reaction.
• As an additive in the preparation of NBC (neodymium – barium –copper) ceramics.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302
• Precautionary Statements: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable