Sodium Carbonate CAS#497-19-8
Sodium carbonate (CAS 497‑19‑8), with the chemical formula Na₂CO₃, is the sodium salt of carbonic acid. It occurs as a white, odorless solid that carries a distinct alkaline taste and possesses notable hygroscopic properties. It dissolves readily in water to yield a moderately alkaline aqueous solution. Sodium carbonate finds broad‑ranging applications across global industrial sectors.
Sodium Carbonate Chemical Properties
| Melting point | 851 °C (lit.) |
| Boiling point | 1600°C |
| density | 2.53 |
| bulk density | 1100kg/m3 |
| refractive index | 1.535 |
| storage temp. | 15-25°C |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| color | White |
| Specific Gravity | 2.532 |
| Odor | at 100.00?%. odorless |
| Flame Color | Yellow |
| PH | 10.52(1 mM solution);10.97(10 mM solution);11.26(100 mM solution); |
| pka | (1) 6.37, (2) 10.25 (carbonic (at 25℃) |
| Water Solubility | 22 g/100 mL (20 ºC) |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.01 λ: 280 nm Amax: 0.01 |
| Merck | 14,8596 |
| BRN | 4154566 |
| Dielectric constant | 5.3（Ambient） |
| Stability: | Stable. Incompatible with powdered alkaline earth metals, aluminium, organic nitro compounds, fluorine, alkali metals, nonmetallic oxides, concentrated sulfuric acid, oxides of phosphorus. |
| InChIKey | CDBYLPFSWZWCQE-UHFFFAOYSA-L |
| CAS DataBase Reference | 497-19-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium carbonate(497-19-8) |
| EPA Substance Registry System | Sodium carbonate (497-19-8) |
Product Application of Sodium Carbonate
Its largest application is glass production. It acts as a flux to reduce the melting point of silica, and this sector consumes nearly half of the world’s sodium carbonate output. Outside glass manufacturing, it works as an effective alkaline agent for pulp and paper making, textile treatment, potable water treatment, and the production of soaps, detergents and drain cleaners. It is also used for tissue digestion, dissolution of amphoteric metals and their compounds, and food processing, and serves as a high-performance cleaning agent. Owing to its wide adaptability and reliable performance, it is an essential material for numerous industrial and household applications.
