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7727-43-7 - Barium sulfate, precipitated, 99% - A11768 - Alfa Aesar

A11768 Barium sulfate, precipitated, 99%

Codice CAS
7727-43-7
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
500g 43,00
2500g 87,00
10000g 269,00
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Barium sulfate, precipitated, 99%

MDL
MFCD00003455
EINECS
231-784-4

Proprietà chimiche

Formula
BaSO4
Peso formula
233.40
Punto di fusione
1580° dec.
Densità
4.5
Solubilità
Soluble in hot concentrated sulphuric acid. Insoluble in water.

Applicazioni

Barium sulfate has wide range of applications. It is primarily used in oil well drilling fluid, and as filler in the paint and varnish industry. It is one of the major constituents of the pigment Lithiopone and the white pigment for paints. It improves the resistance against acid and acidity for plastics when employed as filler. Further it is employed as a component in strobe pyrotechnic compositions, and as a coating for photographic papers to improve the effectiveness of the image. Baryta, a thin layer of barium sulfate, is used to make the papers bright for ink-jet printing. In the chemical and pharmaceutical industry, it is used as a catalyst support when selective hydrogenations are required, for e.g. in Rosenmund reduction (Pd on barium sulfate). In colorimetry, barium sulfate is used as a diffuser to measure light sources. In the medical field, barium sulfate suspension is used clinically as a radiocontrast agent for X-ray imaging and other diagnostic procedures. In biomaterials research, it is one of the components utilized in the preparation of acrylic bone cements.

Note

Incompatible with oxidizing agents, aluminum and phosphorus.

Letteratura

Gillani, R.; Ercan, B.; Qiao, A.; Webster, T. J. Nanofunctionalized Zirconia and Barium Sulfate Particles as Bone Cement Additives. Int. J. Nanomedicine 2010, 5, 1-11.

Hennessy, A. J. B.; Graham, G. M. The Effect of Additives on the Co-crystallization of Calcium with Barium Sulphate. J. Cryst. Growth 2002, 237-239, 2153-2159.

Jones, F.; Jones, P.; Ogdena, M. I.; Richmond, W. R.; Rohl, A. L.; Saunders, M. The Interaction of EDTA with Barium Sulfate. J. Colloid. Interf. Sci. 2007, 316, 553-561.

Altri riferimenti

Merck
14,994
Codice tariffe armonizzato
2833.27
TSCA
Yes

Raccomandato

  • A11766

    Allyl bromide, 99%, stab. with 300-1000ppm Propylene oxide
  • A17814

    2-Amino-2-methyl-1-propanol, 95%, may cont. ca 5% water
  • L13251

    Fluorescein, 90+%
  • 10515

    Lithium chloride, anhydrous, 99%
  • 14707

    Sodium hydrogen carbonate, ACS, 99.7-100.3%

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