Sodium sulfite (also known as Disodium sulfite and Sodium sulfite, anhydrous) is a white crystalline solid with the chemical formula Na2SO3. It is an ionic compound containing two sodium cations (Na+) and one sulfite anion (SO32-). Sodium sulfite is used in textile industry, paper industry, food industry, pharmaceuticals, and water treatment.
Exposure to Sodium sulfite can cause irritation to the skin, eyes, and respiratory tract. So, handle it in accordance with industrial hygiene and safety practice.
Characterization of Sodium sulfite
Sodium sulfite is a water soluble salt that is used as a reagent for sulfonation and sulfomethylation reactions. Some properties of this substance include:
- Its molar mass is 05 g. mol-1.
- Its melting point is 500 °C.
- Its density is 2.633 gcm–3.
- Sodium sulfite does not have a specific boiling point.
Applications of Sodium sulfite
Sodium sulfite is used in different industries. Some uses of Sodium sulfite include:
- Sodium sulfite is used as a preservative to prevent dried fruit discoloration.
- Sodium sulfite is used as a reducing agent in the textile industry.
- Sodium sulfite is used as an oxygen scavenger in protecting the boiler systems from corrosion.
- Sodium sulfite is used in the manufacture of chemicals such as sodium thiosulfate.
- Sodium sulfite is used as a reagent in sulfonation and sulfomethylation reactions.
Sodium sulfite production
Sodium sulfite is produced by reacting sulfur dioxide with sodium carbonate (soda ash). Then, product is purified and dried to form Sodium sulfite crystals or powder.
Na2CO3 +SO2 → Na2SO3 + CO2
Sodium sulfite is stable under normal conditions. However, it should be kept away from incompatible materials such as strong oxidizing agents and acids.
Sodium sulfite storage
Sodium sulfite containers should be kept tightly closed in a dry, cool, and well-ventilated area. This product should be stored away from heat, acids and oxidizing agents.
Sodium sulfite is Non-combustible. It does not burn but may decompose upon heating and produce toxic fumes. When handling this product, wear appropriate protective eyeglasses or chemical safety goggles for eye protection.
Sodium sulfite health hazards
Sodium sulfite is not considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200). However, it can produce the following adverse health problems:
- Skin exposures can cause minor skin irritation, itching, redness, and swelling.
- Eye exposure to sodium sulfite may cause redness or eye irritation.
- The inhalation of sodium sulfite dust can cause throat irritation and breathing diseases.
- The ingestion of sodium sulfite may irritate the mouth and throat, vomiting, and diarrhea.
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FAQ
How much does Sodium sulfite cost per kg?
ArChem Sodium sulfite can be purchased in a variety of volumes. Depending on your orders, Prices are different. For more information about Sodium sulfite price, please contact our technical sales team in ArChem.
What is the chemical formula of Sodium sulfite?
Sodium sulfite is an ionic compound with the chemical formula Na2SO3.
What is the CAS number of Sodium sulfite?
The CAS number of Sodium sulfite is 7757-83-7.
What is the HS code for Sodium sulfite?
The HS code for Sodium sulfite is 283210.
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.
What is the most important application of Sodium sulfite?
Sodium sulfite is used primarily in the pulp and paper industry. Plus, it is used as an oxygen scavenger in protecting the boiler systems from corrosion.