237108

Barium carbonate

ACS reagent, ≥99%

• Synonyme(s) : Witherite
• Formule linéaire : BaCO₃
• CAS Number: 513-77-9
• Poids moléculaire : 197.34
• Beilstein: 7045119
• Numéro CE : 208-167-3
• Numéro MDL: MFCD00003448
• Code UNSPSC : 12352302
• ID de substance PubChem : 329752444
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Essai: ≥99%; 99.0-101.0% (ACS specification)
• Forme: powder or chunks
• Impuretés: ≤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)
• Traces d'anions: S^2-: ≤0.001%; chloride (Cl^-): ≤0.002%
• Traces de cations: Ca: ≤0.05%; Fe: ≤0.002%; K: ≤0.005%; Na: ≤0.02%; Sr: ≤0.7%; heavy metals (as Pb): ≤0.001%
• Chaîne SMILES: [Ba++].[O-]C([O-])=O
• InChI: 1S/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• Clé InChI: AYJRCSIUFZENHW-UHFFFAOYSA-L

Description

Description générale

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.

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H302
• Conseils de prudence: P264 - P270 - P301 + P312 - P501
• Classification des risques: Acute Tox. 4 Oral
• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable