CHEMICAL AND PHYSICAL PROPERTIES
| Physical 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. |
|---|---|
| Color/Form | Fine, heavy powder or polymorphous crystals |
| Odor | Odorless |
| Taste | Tasteless |
| Boiling Point | 2912 °F at 760 mmHg (Decomposes) (NIOSH, 2023) |
| Melting Point | 2876 °F (NIOSH, 2023) |
| Solubility | 0.0002 % at 64 °F (NIOSH, 2023) |
| Density | 4.25 to 4.5 (NIOSH, 2023) |
| Vapor Pressure | 0 mmHg (approx) (NIOSH, 2023) |
| Decomposition | When heated to decomposition it emits toxic fumes of /sulfur oxides/. |
| pH | 5% suspension in water is neutral to litmus paper |
| Refractive Index | Indices of refraction: 1.636 (alpha), 1.637 (beta), 1.648 (gamma) |
| Other Experimental Properties | 1149 °C (transition point monoclinic) |
| Chemical Classes | Metals -> Metals, Inorganic Compounds |
COMPUTED DESCRIPTORS
| Molecular Weight | 233.39 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 0 |
| Exact Mass | 233.856977 g/mol |
| Monoisotopic Mass | 233.856977 g/mol |
| Topological Polar Surface Area | 88.6 Ų |
| Heavy Atom Count | 6 |
| Formal Charge | 0 |
| Complexity | 62.2 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 2 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
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.