Sodium carbonate: Difference between revisions
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* Primary input salt for metathesis reactions with calcium salts | * Primary input salt for metathesis reactions with calcium salts | ||
* Feedstock for [[sodium bicarbonate]] | * Feedstock for [[sodium bicarbonate]] | ||
==Natural occurrence== | ==Natural occurrence== | ||
* Sodium carbonate occurs naturally in [[wood ash]] from salt-loving plants like [[kelp]] and [[dwarf saltwort]]. | * Sodium carbonate occurs naturally in [[wood ash]] from salt-loving plants like [[kelp]] and [[dwarf saltwort]]. | ||
==Hazards== | ==Hazards== | ||
==Production== | ==Production== | ||
===Extraction=== | ===Extraction=== | ||
* See [[potash]] | * See [[potash]] | ||
===Synthesis=== | ===Synthesis=== | ||
====From sodium bicarbonate==== | ====From sodium bicarbonate==== | ||
* Heat [[sodium bicarbonate]] to 50°C to decompose it to sodium carbonate and water | * Heat [[sodium bicarbonate]] to 50°C to decompose it to sodium carbonate and water | ||
*: {{#Chem: 2NaHCO3 { ≥50°C --> } Na2CO3 + CO2 + H2O}} | *: {{#Chem: 2NaHCO3 { ≥50°C --> } Na2CO3 + CO2 + H2O}} | ||
==See Also== | ==See Also== | ||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 14:37, 25 June 2019
| Chemical formula | Na2CO3 |
|---|---|
| Molar Mass(g/mol) | 106 |
| Density(g/cc) | 2.54 |
| Melting Point(°C) | 851 |
| Boiling Point(°C) | 1600 |
| Solubility in water(g/L) | 251 |
| Solubility in ethanol(g/L) | insoluble |
| NFPA 704 |  0
1
1
|
| Thermal decomposition of Sodium carbonate | |
| 33.5 | 10-hydrate
33.5°C 7-hydrate |
| 40 | 7-hydrate
40°C hydrate |
| 100 | hydrate
100°C anhydrous |
Uses
Primary
- Essential component for many kinds of glass
- Safe counteraction for acids
- Primary input salt for metathesis reactions with calcium salts
- Feedstock for sodium bicarbonate
Natural occurrence
- Sodium carbonate occurs naturally in wood ash from salt-loving plants like kelp and dwarf saltwort.
Hazards
Production
Extraction
- See potash
Synthesis
From sodium bicarbonate
- Heat sodium bicarbonate to 50°C to decompose it to sodium carbonate and water
- 2 NaHCO3{≥50 °CNa2CO3 + CO2 + H2O}→
- 2 NaHCO3