Sodium sulfite
Sodium sulfite is an inorganic compound with the chemical formula Na2SO3. It is a water soluble salt that is used as a reagent for sulfonation and sulfomethylation reactions. Sodium sulfite is an ionic compound containing two sodium cations (Na+) and one sulfite anion (SO32-).
ArChem provides Sodium sulfite and other raw chemical materials such as MEA, DEA, Soda Ash, and Caustic soda for various industrial applications. Additionally, ArChem provides customers with other chemical products including Plasticizers, organic solvents, etc. for further information please get in touch with our technical sales team in ArChem.
What is Sodium sulfite?
Sodium sulfite (also known as sodium sulphite, Disodium sulfite, and Sodium sulfite, anhydrous) is a white crystalline solid with a salty taste. It is slightly alkaline. The solution of Sodium sulfite is basic with an approximate pH of 9. This product is used in the textile industry, paper industry, food industry, pharmaceuticals, and water treatment.
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Sodium sulfite technical properties
Sodium sulfite in its anhydrous form is a white solid. The major difference between this product and sodium sulfite heptahydrate is the relative stability of the anhydrous form towards oxidation. The chemical and physical properties of ArChem Sodium sulfite are:
Molecular Formula | Na2SO3 |
IUPAC name | disodium;sulfite |
Cas Number | 7757-83-7 |
Molecular weight | 126.05 g/mol |
Density | 2.633 gcm–3 |
Boiling Point | Decomposes |
Flashpoint | Non- flammable |
Melting Point | 500 °C |
Flammability | Non-combustible |
Sodium sulfite application
Sodium sulfite has different applications in various industries. Some uses of ArChem Sodium sulfite include:
- The pulp and paper industry
- As a preservative in the food industry
- Water treatment
- As an oxygen scavenger agent in boiler systems
- As a reducing agent in the textile industry
- As a reagent in sulfonation and sulfomethylation reactions
Sodium sulfite production
Industrially, Sodium sulfite is produced by the reaction of sodium carbonate and sulfur dioxide solution. First, sodium bisulfite compound is formed. Then, this compound reacts with sodium hydroxide or sodium carbonate to yield sodium sulfite.
Na2CO3 + SO2 → Na2SO3 + CO2
Sodium sulfite storage
When using Sodium sulfite, handle it under industrial hygiene and safety practices. Storage conditions of ArChem Sodium sulfite are listed below:
- Sodium sulfite should be stored in a cool, dry, and well-ventilated area.
- Sodium sulfite containers should be kept tightly closed.
- Sodium sulfite should be kept away from incompatible materials(Strong oxidizing agents and acids)
Sodium sulfite health hazards
Exposure to Sodium sulfite (especially powder) can irritate the skin, eyes, and respiratory tract. If inhaled, it may cause sensitization. Breathing Sodium sulfite dust may aggravate asthma or other pulmonary diseases and may cause headaches or breathing difficulties. Some of the necessary first-aid measures are described below:
- In case of inhalation, take deep breaths of fresh air. If symptoms such as coughing and shortness of breath develop, call a physician immediately.
- In case of ingestion, if the victim is conscious give 2 glasses of water to dilute the chemical and call a physician immediately. If the victim is unconscious, do not give anything by mouth.
- In case of skin contact, wash the skin with soap and water. If symptoms such as redness or irritation develop, call a physician immediately.
- In case of eye contact, flush eyes with plenty of water or a normal saline solution for 20 minutes. Call a physician immediately.
Operators should wear appropriate PPE (including gloves, safety glasses, and protective clothing). Plus, they should avoid contact with skin, eyes, or clothing.
FAQ
What is Sodium sulfite?
Sodium sulfite is a white crystalline solid with a salty taste. It is a water-soluble salt that is used as a reagent for sulfonation and sulfomethylation reactions. The solution of Sodium sulfite is basic with an approximate pH of 9.
What is Sodium sulfite used for?
Sodium sulfite is used in the textile industry, pulp and paper industry, food industry, pharmaceuticals, and water treatment.
What is the pH of Sodium sulfite?
The solution of Sodium sulfite is basic with an approximate pH of 9.What is the price of Sodium sulfite?
ArChem raw chemical materials can be purchased in a variety of volumes. Depending on your orders, prices are different. For more information about Sodium sulfite price, please get in touch with our technical sales team in ArChem.