474711

Barium

dendritic pieces, purified by distillation, 99.99% trace metals basis

• Synonyme(s) : Barium element
• Formule empirique (notation de Hill) : Ba
• CAS Number: 7440-39-3
• Poids moléculaire : 137.33
• Numéro CE : 231-149-1
• Numéro MDL: MFCD00134031
• Code UNSPSC : 12141505
• ID de substance PubChem : 24871038
• Nomenclature NACRES : NA.23

Propriétés

• Niveau de qualité: 100
• Essai: 99.99% trace metals basis
• Forme: dendritic pieces
• Produit purifié par: distillation
• Pertinence de la réaction: reagent type: reductant
• Résistivité: 50.0 μΩ-cm, 20°C
• pb: 1640 °C (lit.)
• Pf: 725 °C (lit.)
• Densité: 3.6 g/mL at 25 °C (lit.)
• Chaîne SMILES: [Ba]
• InChI: 1S/Ba
• Clé InChI: DSAJWYNOEDNPEQ-UHFFFAOYSA-N

Description

Description générale

Barium is a reactive, soft electropositive metal with a body-centered cubic crystal structure. It can be produced in a vacuum by reducing its oxide with aluminum. It has medium-specific weight and good electrical conductivity. It is widely used in alloying, removing unwanted gases from vacuum tubes, and as a reducing agent.

Application

Barium can be used as a precursor to synthesize Ba₃Bi_6.67Se₁₃,Ba₃Bi₆PbSe₁₃, and Ba₃Bi₆SnSe₁₃.

It can be used as a dopant for Pb²⁺replacement in perovskite films. The addition of barium enhances the power conversion efficiency of organic-inorganic lead halide solar cells.

Critical for the synthesis of pure Ba₂₁M₂O₅H_X (M = Ge, SI, Ga, In, Tl) suboxide Zintl phases.³

Informations sur la sécurité

• Pictogrammes: GHS02,GHS06,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H228,H260,H301,H314
• Conseils de prudence: P210 - P231 + P232 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Sol. 1 - Skin Corr. 1B - Water-react 1
• Code de la classe de stockage: 4.3 - Hazardous materials which set free flammable gases upon contact with water
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type P3 (EN 143) respirator cartridges