Barium sulfate: Difference between revisions
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==Hazards== | ==Hazards== | ||
* GRAS | * GRAS | ||
==Production== | ==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=== | ===Extraction=== | ||
* [[Barite]] | * [[Barite]] | ||
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* A metathesis reaction between barium sulfide and sodium or potassium sulfate in water | * A metathesis reaction between barium sulfide and sodium or potassium sulfate in water | ||
*: {{#Chem: BaS(aq) + Na2SO4(aq) --> BaSO4(s) + Na2S(aq)}} | *: {{#Chem: BaS(aq) + Na2SO4(aq) --> BaSO4(s) + Na2S(aq)}} | ||
==Testing== | ==Testing== | ||
==Purification== | ==Purification== | ||
Revision as of 22:13, 19 March 2025
| 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)}}