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474711

Sigma-Aldrich

Barium

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

Sinonimo/i:

Barium element

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About This Item

Formula empirica (notazione di Hill):
Ba
Numero CAS:
7440-39-3
Peso molecolare:
137.33
Numero CE:
231-149-1
Numero MDL:
MFCD00134031
Codice UNSPSC:
12141505
ID PubChem:
24871038
NACRES:
NA.23

Livello qualitativo

100

Saggio

99.99% trace metals basis

Stato

dendritic pieces

Purificato mediante

distillation

Impiego in reazioni chimiche

reagent type: reductant

Resistività

50.0 μΩ-cm, 20°C

P. ebollizione

1640 °C (lit.)

Punto di fusione

725 °C (lit.)

Densità

3.6 g/mL at 25 °C (lit.)

Stringa SMILE

[Ba]

InChI

1S/Ba
DSAJWYNOEDNPEQ-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

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.

Applicazioni

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

Accessorio

N° Catalogo
Descrizione
Determinazione del prezzo

Avvertenze

Danger

Indicazioni di pericolo

H228,H260,H301,H314

Classi di pericolo

Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Sol. 1 - Skin Corr. 1B - Water-react 1

Codice della classe di stoccaggio

4.3 - Hazardous materials which set free flammable gases upon contact with water

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificati d'analisi (COA)

Lot/Batch Number
0000012688
MKCC8685
MKCC8689
MKCC6648
MKCB3818

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