Sodium Bicarbonate CAS#144-55-8
High Solubility: Sodium bicarbonate shows moderate solubility in water and is practically insoluble in ethanol and other common organic solvents, which supports its wide adoption in aqueous systems.
Stable pH: The 10% aqueous solution of this compound maintains a pH range of 8.0–8.6 at 25°C; it gradually decomposes upon prolonged heating, releasing carbon dioxide, which reflects its thermal decomposition property.
Versatile Uses: It acts as a leavening agent in food processing, a raw material for pharmaceutical antacids, and a reagent for water treatment, flue gas desulfurization and pH adjustment.
Crystalline Form & Hygroscopic Nature: This material is supplied as a white crystalline powder with low hygroscopicity, suitable for industries requiring easy metering and stable storage.
Sodium bicarbonate, characterized by the molecular formula NaHCO₃, presents as an odorless white crystalline powder. It is moderately soluble in water (96 g/L at 20°C), and insoluble in ethanol. A 10% aqueous solution of this compound has a pH of 8.0–8.6. The substance may cause irritation to eyes and respiratory tract from dust inhalation. It is utilized as a food leavening agent, antacid pharmaceutical raw material, and analytical reagent for carbon dioxide testing.
Sodium Bicarbonate Chemical Properties
| Item | Specification |
|---|---|
| Melting point | >300 °C (decomposes)(lit.) |
| Density | 2.16 g/cm³ |
| Refractive index | 1.33 |
| Storage temp | Store below +30°C |
| Solubility | Water: 96 g/L (20°C); insoluble in ethanol |
| Form | Powder / Crystal |
| Color | White |
| Odor | Odorless |
| PH Range | 8.0–8.6 (100 g/l, H₂O, 20℃) |
| Water Solubility | 96 g/L (20 º C) |
| Sensitive | Non-hygroscopic |
| Stability | Stable under normal conditions. Decomposes slowly in moist air, incompatible with strong acids |
| InChIKey | UIIMBOGNXHQVGW-UHFFFAOYSA-M |
| CAS DataBase Reference | 144-55-8 (CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium bicarbonate (144-55-8) |
| EPA Substance Registry System | Carbonic acid, monosodium salt (144-55-8) |
Safety Information
| Item | Specification |
|---|---|
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | VZ0950000 |
| TSCA | Yes |
| HS Code | 28363000 |
This compound is employed as a foaming agent and neutralizer in detergent formulations, a fire extinguishing medium in dry powder fire extinguishers, and a buffering agent in aquaculture. It also functions as a feed additive for livestock, a blasting agent in textile dyeing, and a raw material for producing sodium carbonate. Additionally, it finds application as a cleaning abrasive, gas purifying adsorbent, and electrolyte auxiliary.
