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MilliporeSigma

237094

Barium

rod, diam. ~2 cm, ≥99% trace metals basis

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25 G

$412.00

$412.00

Estimated to ship onMarch 31, 2026Details

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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:
12352300
PubChem Substance ID:
24854216
NACRES:
NA.22

Key Documents

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Quality Level

100

assay

≥99% trace metals basis

form

rod

reaction suitability

reagent type: reductant

resistivity

50.0 μΩ-cm, 20°C

diam.

~2 cm

impurities

≤2% 2-ethylhexyl dihydrogenphosphate and tris(2-ethylhexyl) phosphate
0.5% strontium

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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403334465666244864
Barium rod, diam. ~2 cm, ≥99% trace metals basis

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403334

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Magnesium ReagentPlus®, powder, −325 mesh, 99.5% trace metals basis

Sigma-Aldrich

465666

Magnesium

Potassium chunks (in mineral oil), 98% trace metals basis

Sigma-Aldrich

244864

Potassium

assay

≥99% trace metals basis

assay

99% trace metals basis

assay

99.5% trace metals basis

assay

98% trace metals basis

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

200

reaction suitability

reagent type: reductant

reaction suitability

reagent type: reductant

reaction suitability

reagent type: reductant

reaction suitability

reagent type: reductant

form

rod

form

pieces

form

powder

form

chunks (in mineral oil)

bp

1640 °C (lit.)

bp

1640 °C (lit.)

bp

1090 °C (lit.)

bp

760 °C (lit.)

mp

725 °C (lit.)

mp

725 °C (lit.)

mp

648 °C (lit.)

mp

64 °C (lit.)

Application

Critical for the synthesis of pure Ba21M2O5HX (M = Ge, SI, Ga, In, Tl) suboxide Zintl phases.3
Promotes anchorage-independent growth and invasion of human HaCaT keratinocytes via c-SRC kinase activation[1]

Reactant for synthesis of heterobimetallic alkaline earth complexes[2]

Commonly used for medicinal purposes, particularly for visualization of the gastrointestinal tract[3]

Reactant involved in:
  • Interactions with fused quartz[4]
  • Aggregation of alginate-coated iron oxide nanoparticles[5]

signalword

Danger

Hazard Classifications

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

Storage Class

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

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
0000262068
0000261003
0000262068
0000261003
0000129153

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N. D. Thang, et al.,
PLoS ONE, 6 (2011)
D. P. Daniels, et al.,
Dalton Transactions (2011)
Alan S Rosman et al.
The American journal of medicine, 120(3), 203-210 (2007-03-14)
Published studies have reported a wide range of sensitivities and specificities for computed tomographic (CT) colonography for polyp detection, generating controversy regarding its diagnostic accuracy. A meta-analysis of published studies comparing the accuracies of CT colonography and colonoscopy for polyp
Kai Loon Chen et al.
Langmuir : the ACS journal of surfaces and colloids, 23(11), 5920-5928 (2007-05-02)
Early-stage aggregation kinetics studies of alginate-coated hematite nanoparticles in solutions containing alkaline-earth metal cations revealed enhanced aggregation rates in the presence of Ca2+, Sr2+, and Ba2+, but not with Mg2+. Transmission electron microscopy (TEM) imaging of the aggregates provided evidence
Patrick L Hayes et al.
The journal of physical chemistry. A, 112(4), 660-668 (2008-01-10)
Inorganic anions and cations are ubiquitous in environmental chemistry. Here, we use second harmonic generation to track the interaction of the environmentally important metal cations barium, strontium, and cadmium and the nitrate anion with fused quartz/water interfaces at pH 7.
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