CAS 7727-43-7 Barium Sulfate - Materials / Alfa Chemistry

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Phosphors - Phosphor Materials

Barium Sulfate

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Catalog Number

ACM7727437

Product Name

Barium Sulfate

Structure

CAS

7727-43-7

Category

Phosphors - Phosphor Materials

Description

Barium sulfate appears as white or yellowish odorless powder or small crystals. Mp: 1580°C (with decomposition). Density: 4.25 -4.5 g cm-3. Insoluble in water, dilute acids, alcohol. Soluble in hot concentrated sulfuric acid. Used as a weighting mud in oil-drilling, in paints, paper coatings, linoleum, textiles, rubber. Administered internally ("barium cocktail") as a radio-opaque diagnostic aid.;DryPowder; Liquid; WetSolid; WetSolid, Liquid;ODOURLESS TASTELESS WHITE OR YELLOWISH CRYSTALS OR POWDER.;White or yellowish, odorless powder.;White or yellowish, odorless powder.

IUPAC Name

barium(2+);sulfate

Molecular Weight

233.39g/mol

Molecular Formula

BaO4S

Canonical SMILES

[O-]S(=O)(=O)[O-].[Ba+2]

InChI

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

InChI Key

TZCXTZWJZNENPQ-UHFFFAOYSA-L

Boiling Point

2912 °F at 760 mm Hg (Decomposes) (NIOSH, 2016);decomposes;2912°F (decomposes);2912°F (Decomposes)

Melting Point

1580°C

Purity

> 99.99%

Density

4.5

Solubility

water, 8470 mg/L @ 25 °C (est)

Appearance

White powder

Color/Form

Fine, heavy powder or polymorphous crystals;White, orthorhombic crystals;White or yellowish powder;Opaque powder

Complexity

62.2

Covalently-Bonded Unit Count

EC Number

231-784-4;236-664-5

Exact Mass

233.856977g/mol

Form

Nanodispersion (Water, IPA, Ethanol)

Formal Charge

Heavy Atom Count

ICSC Number

0827

MDL Number

MFCD00003455

MeSH Entry Terms

Barite;Baritop;Barium Sulfate;Barium Sulfate (2:1);E Z CAT;E-Z-CAT;EZCAT;Micropaque Oral;Sulfate, Barium

Monoisotopic Mass

233.856977g/mol

Odor

Odorless

Other Experimental

SOLUBILITY IN WATER INCREASES CONSIDERABLY IN PRESENCE OF CHLORIDE & OTHER ANIONS;1149 °C (transition point monoclinic);Lithopone does not darken in the presence of sulfides;Mohs hardness: 3.3;Heat of formation: -1473.2 kJ/mol; Gibbs energy of formation: -1362.2 kJ/mol; molar entropy: 132.2 J/mol-K; molar heat capacity: 101.8 J/mol-K

Packaging

25 ton

Refractive Index

Indices of refraction: 1.636 (alpha), 1.637 (beta), 1.648 (gamma)

Rotatable Bond Count

RTECS Number

CR0600000

Stability

Stable.

UNII

25BB7EKE2E

UN Number