474711

Barium

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

• Synonym(s): Barium element
• Empirical Formula (Hill Notation): Ba
• CAS Number: 7440-39-3
• Molecular Weight: 137.33
• EC Number: 231-149-1
• MDL number: MFCD00134031
• UNSPSC Code: 12141505
• PubChem Substance ID: 24871038
• NACRES: NA.23

Properties

• Assay: 99.99% trace metals basis
• form: dendritic pieces
• purified by: distillation
• reaction suitability: reagent type: reductant
• resistivity: 50.0 μΩ-cm, 20°C
• bp: 1640 °C (lit.)
• mp: 725 °C (lit.)
• density: 3.6 g/mL at 25 °C (lit.)
• SMILES string: [Ba]
• InChI: 1S/Ba
• InChI key: DSAJWYNOEDNPEQ-UHFFFAOYSA-N

Description

General description

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

Safety Information

• Pictograms: GHS02,GHS06,GHS05
• Signal Word: Danger
• Hazard Statements: H228,H260,H301,H314
• Precautionary Statements: P210 - P231 + P232 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Sol. 1 - Skin Corr. 1B - Water-react 1
• Storage Class Code: 4.3 - Hazardous materials which set free flammable gases upon contact with water
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves