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243353

Sigma-Aldrich

Bariumsulfat

ReagentPlus®, 99%

Synonym(e):

Baryt, Schwerspat

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About This Item

Lineare Formel:
BaSO4
CAS-Nummer:
7727-43-7
Molekulargewicht:
233.39
EG-Nummer:
231-784-4
MDL-Nummer:
MFCD00003455
UNSPSC-Code:
12352106
PubChem Substanz-ID:
329752453
NACRES:
NA.55
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Qualität

reagent

Produktlinie

ReagentPlus®

Assay

99%

Form

powder

pH-Wert

7

SMILES String

[Ba++].[O-]S([O-])(=O)=O

InChI

1S/Ba.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2

InChIKey

TZCXTZWJZNENPQ-UHFFFAOYSA-L

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Allgemeine Beschreibung

Barium sulphate is widely employed as an inorganic filler. Its crystals belong to the rhombic crystal system. The rhombic crystals transforms to monoclinic form at 1148°C and eventually it decomposes to barium oxide, sulfur dioxide and oxygen at temperatures above 1400°C.[1]

Anwendung

Barium sulfate may be used in the following studies:
  • Qualitative and quantitative analysis of Ba2+ and SO4-2 ions.[1]
  • Preparation of sulfur dioxide.[2]
  • Preparation of hybrid organic-inorganic material.[3]

Rechtliche Hinweise

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Lagerklassenschlüssel

13 - Non Combustible Solids

WGK

nwg

Flammpunkt (°F)

does not flash

Flammpunkt (°C)

does not flash

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCX3606
0000325006
0000363974
MKCV5366
MKCV5365

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Die Dokumentenbibliothek aufrufen

Improved method for the preparation of sulfur dioxide from barium sulfate for isotope ratio studies.
Bailey SA and Smith JW.
Analytical Chemistry, 44(8), 1542-1543 (1972)
Ionic liquid-functionalized crystals of barium sulfate: A hybrid organic-inorganic material with tuned hydrophilicity and solid-liquid behavior.
Kowacz M, et al.
Materials Chemistry and Physics, 160, 308-314 (2015)
Tafadzwa P Makarawo et al.
The American surgeon, 79(7), 728-733 (2013-07-03)
Water as an intraluminal negative contrast medium produces improved image quality with reduced artefact. However, rapid absorption of oral water in the bowel relative to speed and timing of image capturing has limited its clinical application. These findings predate advances
Dewey C Scheid et al.
Journal of the American Board of Family Medicine : JABFM, 26(5), 498-507 (2013-09-06)
The purpose of this study was to describe colorectal cancer screening (CRCS) practices across a variety of primary care clinics and identify the methods used by primary care physicians (PCPs) with higher rates of CRCS ("exemplars"). Physician questionnaires, structured interviews
Joon-Sung Kim et al.
American journal of physical medicine & rehabilitation, 92(10), 912-919 (2013-06-07)
The aim of this study was to report the characteristics of dysphagia in children with cerebral palsy (CP), related to gross motor function. Videofluoroscopic swallow study was performed in 29 children with CP, according to the manual of Logemann. Five
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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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