Barium Sulfate (Barium Sodium Oxide) (BaSO4)-Powder

Characteristic

Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO₄. It is a white crystalline solid that is odorless and insoluble in water.

Chemical formula：BaSO₄

Molar mass：233.38 g/mol

Appearance：white crystalline

Odor：odorless

Density：4.49 g/cm³

Melting point：1,580 °C (2,880 °F; 1,850 K)

Boiling point：1,600 °C (2,910 °F; 1,870 K) (decomposes)

Solubility in water：0.0002448 g/100 mL (20 °C)

                                 0.000285 g/100 mL (30 °C)

Solubility product (Ksp)：1.0842 × 10⁻¹⁰ (25 °C)

Solubility：insoluble in alcohol, soluble in concentrated, hot sulfuric acid

Magnetic susceptibility (χ)：-71.3·10⁻⁶ cm³/mol

Refractive index (nD)：1.636 (alpha)

Crystal structure：orthorhombic

Application

It occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it. The white opaque appearance and its high density are exploited in its main applications.