Barium sulfate
| Chemical formula | {{#Chem:BaSO4}} |
|---|---|
| Molar Mass(g/mol) | 233.43 |
| Density(g/cc) | 4.3 |
| Melting Point(°C) | 1345 |
| Boiling Point(°C) | 1600 |
| Solubility in water(g/L) | .0024 |
| NFPA 704 |  0
0
0
|
Barium sulfate is a radiographic contrast agent that is supplied as white to lightly colored powder for suspension (40% w/w) for oral administration. Formulations can contain excipients including: artificial candied sugar flavor, carrageenan, citric acid, ethyl vanillin, natural and artificial orange flavor, polysorbate 80, saccharin sodium, simethicone, sodium citrate, sodium carboxymethylcellulose, sorbitol and xanthan gum.
Uses
Primary
- WHO LEM radiocontrast agent
Other
- Precursor to barium sulfide, thence to all barium salts
Natural occurrence
- The mineral barite is primarily barium sulfate
Hazards
- GRAS
==Production==WARNING Like calcium sulfate, this is a "terminal chemical". Producing this compound at scale for any purpose is a bad idea, logistically. Every mol of sulfate ions trapped in this material is one mol of sulfuric acid lost.
Extraction
Synthesis
- A metathesis reaction between barium sulfide and sodium or potassium sulfate in water
- {{#Chem: BaS(aq) + Na2SO4(aq) --> BaSO4(s) + Na2S(aq)}}