Sodium Sulfite
Sodium sulfite, chemical formula Na2SO3 is soluble sodium salt of sulfurous acid with the CAS number 7757-83-7. It is a white solid and odorless compound with 126.043 g/mol molar mass. Sodium sulfite has the melting point of 33.4 degree Celsius and doesn’t have boiling point as it decomposes on heating.
Preparation of Sodium Sulfite
Sodium sulfite can be prepared by sodium hydroxide solution and sulfur dioxide gas reaction in the laboratories. On industrial scale sodium sulfite manufacturers prepare it by reacting sulfur dioxide with sodium carbonate solution.
Applications of Sodium Sulfite
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Pulp and paper industry buy sodium sulfite as it is used as oxygen scavenger agent in the water treatment to treat the water being fed to steam boilers, avoiding corrosion issues.
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Photographic industry use is to protect developer solutions from oxidation and wash off fixer from the films and for emulsions of photo paper.
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Textile industry use it as a bleaching, dechlorinating and desulfurizing agent and leather industry use it for the sulphonation of tanning extracts.
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Used in the TNT production and is used in the chemical manufacturing as a sulfonation or sulfomethylation agent.
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It is used for the sodium thiosulfate production, froth flotation of ores, oil discovery, dyes manufacturing and more.
Sodium Sulfite MSDS
Sodium Sulfite Handling and Storage
Sodium Sulfite suppliers, manufacturers or buyers need to consider some safety in handling and storage guides when they buy Sodium Sulfite. Few of the instructions are listed below.
Handling:
Use personal protective equipment. Avoid skin, eye contact, ingestion and inhalation. Wash hands and other exposed areas properly with soap and water after handling. Use spark proof and explosion proof equipment. Provide enough exhaust ventilation.
Storage:
Store in a cool and ventilated place. Keep it away from the sources of ignition and incompatible materials. Keep it in an original container and keep it tightly closed.
First Aid Measures
People handling or working with sodium sulfite like sodium sulfite suppliers, manufacturers or buyers can equip following safety measures in case of any hazards:
After Inhalation: Move the victim to fresh air. Give artificial respiration if breathing is reducing and give the victim rest. Get medical attention.
Skin Contact: Wash skin or hair with plenty of mild soap and water. Seek medical attention, if symptoms persist.
Eye Contact: Check for the contact lenses, remove if present. Wash eyes thoroughly with water for 15 minutes at least. Seek medical aid, if redness or itching persists.
Ingestion: In case of ingestion, first rinse the mouth with water and do not induce vomiting. Get medical assistance.
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