Sodium sulfite

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:

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.