Sodium bicarbonate
Sodium bicarbonate is a white, crystalline powder with the chemical formula NaHCO3. It is a salt composed of a sodium cation (Na+) and a bicarbonate anion (HCO3−). Sodium bicarbonate is commonly used as a pH buffering agent, systemic alkalizer and in topical cleansing solutions.
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What is Sodium bicarbonate?
Sodium bicarbonate’s technical properties
Sodium bicarbonate initially comes out of the ground as minerals nahcolite. Nahcolite is a naturally occurring sodium bicarbonate that does not contain chemical additives. The chemical and physical properties of ArChem Sodium bicarbonate are:
| Molecular Formula | NaHCO3 |
| IUPAC name | sodium hydrogen carbonate |
| Cas Number | 144-55-8 |
| Molecular weight | 84.01 g/mol |
| Density | 2.2 gcm–3 |
| Boiling Point | 851 °C |
| Flashpoint | not applicable |
| Melting Point | >300 °C |
| Flammability | Non combustible |
Sodium bicarbonate applications
Sodium bicarbonate has different applications in various industries. Some uses of ArChem Sodium bicarbonate include:
- Detergent production
- Food industry
- pH raising
- Chemical industry
- Surface treatment
- Flue gas cleaning
Sodium bicarbonate production
Sodium bicarbonate is produced industrially by the Solvay method. The Solvay reaction is a water-based reaction involving sodium chloride, ammonia, and carbon dioxide. Carbon dioxide combines with aqueous sodium hydroxide solution to produce sodium bicarbonate. This reaction initially produces sodium carbonate. Then, adding carbon dioxide to the reaction produces sodium bicarbonate.
Na2CO3 + CO2 + H2O → 2 NaHCO3
Sodium bicarbonate storage
Storage conditions of ArChem Sodium bicarbonate are listed below:
- Sodium bicarbonate should be stored in a cool and dry area with local and general ventilation.
- The recommended storage temperature for Sodium bicarbonate is 15 – 25 °C.
- Sodium bicarbonate is not reactive under normal conditions.
- Sodium bicarbonate should be kept away from heat. Decomposition takes place at temperatures above 165 °C at 97.3 kPa.
Sodium bicarbonate health hazards
Sodium bicarbonate is not a hazardous substance according to regulation (EC) No. 1272/2008. When handling Sodium bicarbonate, some of necessary first-aid measures are described as below:
- In case of inhalation, remove patient to fresh air. Keep at rest in comfortable position for breathing. If symptoms persist, seek medical advice.
- In case of ingestion, rinse mouth completely. Call a physician immediately.
- In case of skin contact, rinse skin with water. Call a physician immediately.
- In case of eye contact, rinse cautiously with water for several minutes. Call a physician immediately.
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