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Sodium Sulfite  Na2SO3,7757-83-7reducing agent, bleach, anti-chlorine agent,  fixing solution, food preservation.

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Sodium Sulfite Na2SO3,7757-83-7reducing agent, bleach, anti-chlorine agent, fixing solution, food preservation.

  • Product Name Sodium Sulfite
  • Chemical formula Na2SO3
  • CAS NO. 7757-83-7
  • Exterior white crystalline powder
  • Content ≥90%
  • Grade standard Industrial grade

Basic information

1. Appearance: Sodium sulfite is a white crystalline powder, odorless and slightly sulphate taste. 2. Solubility: sodium sulfite is easily soluble in water and is alkaline in aqueous solution.3. Stability: Sodium sulfite has good stability, but it may lose crystal water in humid and high temperature environments.4. Reducibility: Sodium sulfite has reducibility and can react with many oxides.

1. Photographic industry: Sodium sulfite is one of the important components of photographic developer, used to develop photographic negatives and film.
2. Bleach and disinfectant: Sodium sulfite has the function of bleaching and disinfection, and is often used in textile, paper and catering industries.
3. Bleach and detergent: Sodium sulfite can be used to bleach cotton fabric, wood and food, etc., and can also be used in the manufacture of detergent.
4. Chemical analysis: Sodium sulfite can be used as a reducing agent for quantitative analysis, gas adsorbent and titration reagent.

The preparation of sodium sulfite is usually produced by the reaction of sulfite with sodium carbonate:
Safety information:
1. Sodium sulfite is a toxic chemical that may cause irritation in contact with skin and eyes. Therefore, appropriate protective equipment should be worn during operation to avoid direct contact with the skin and eyes.
2. Avoid inhaling the gas of sodium sulfite powder or its solution, and operate in a well-ventilated place.
3. Sodium sulfite should not be mixed with strong oxidants and acidic substances to avoid unsafe reactions.
4. When storing sodium sulfite, it should be kept in a dry, sealed container, away from fire sources and flammable substances.

Please note that the specific nature, use and safety information of sodium sulfite may vary due to regulations and standards in different countries and regions, so the use and handling of sodium sulfite should be carried out in accordance with the relevant local regulations.


Storage and transportation

Operation precautions: Close the operation and strengthen ventilation. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, work clothes to prevent toxin penetration, and rubber gloves. Avoid generating dust. Avoid contact with acids. Light loading and unloading during transportation to prevent packaging damage. Equipped with leakage emergency response equipment. Empty containers may have residual harmful substances.

Storage precautions: Store in a cool and ventilated warehouse. Stay away from sparks and heat sources. It should be stored separately from acids and should not be stored together. Not suitable for long-term storage. The storage area should be equipped with appropriate materials to contain leaked materials.

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