Sodium Carbonate CAS#497-19-8
High Solubility: Sodium carbonate shows good solubility in water and is practically insoluble in ethanol and most organic solvents, supporting its wide application in aqueous industrial systems.
Stable pH: The 10% aqueous solution of this compound maintains a pH range of 11.0–12.0 at 25°C; the aqueous solution is stable under normal heating without rapid decomposition.
Versatile Uses: It serves as a raw material for glass manufacturing, a neutralizing agent in chemical industry, and a water softener and pH regulator in wastewater treatment.
Crystalline Form & Hygroscopic Nature: This material is provided as a white crystalline powder or granular solid with hygroscopic tendencies, suitable for industrial scenarios requiring accurate weighing and sealed storage.
Sodium carbonate, characterized by the molecular formula Na₂CO₃, presents as an odorless white granular or crystalline powder. It is freely soluble in water (215 g/L at 20°C), and insoluble in ethanol. A 10% aqueous solution of this compound maintains a pH of 11.0–12.0. The substance possesses irritant characteristics and is utilized as a glass raw material, alkaline neutralizer, and analytical reagent.
Sodium Carbonate Chemical Properties
| Item | Specification |
|---|---|
| Melting point | 851 °C (lit.) |
| Density | 2.53 g/cm³ |
| Refractive index | 1.535 |
| Storage temp | Store below +30°C |
| Solubility | Soluble in water; insoluble in ethanol |
| Form | Granule / Powder / Crystal |
| Color | White |
| Odor | Odorless |
| PH Range | 11.0–12.0 (100 g/l, H₂O, 20℃) |
| Water Solubility | 215 g/L (20 º C) |
| Sensitive | Hygroscopic |
| Stability | Stable under normal conditions. Incompatible with strong acids, aluminum salts |
| 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 | Carbonic acid, disodium salt (497-19-8) |
Safety Information
| Item | Specification |
|---|---|
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | VZ4050000 |
| TSCA | Yes |
| HS Code | 28362000 |
This compound is employed as a flux for glass and ceramic production, a alkaline auxiliary in textile dyeing and printing, and a builder for detergent formulations. It also functions as a pH regulator in pulp and paper making, a raw material for sodium salt synthesis, and a precipitant in metallurgy. Additionally, it finds application as a water softening agent, food processing additive, and desulfurizing agent for flue gas treatment.
