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Sigma-Aldrich

Barium

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

Synonym(s):

Barium element

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About This Item

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

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

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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 Ba3Bi6.67Se13,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 Ba21M2O5HX (M = Ge, SI, Ga, In, Tl) suboxide Zintl phases.3

Signal Word

Danger

Hazard Statements

H228,H260,H301,H314

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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