Sodium, Hong'an Sodium, Sewage Treatment Raw Materials

Sulfite Product Introduction
Product Name: Sodium Sulfite
English Name: Sodium Sulfite
Chemical Formula: Na₂SO₃
CAS Number: 7757-83-7

Product Overview
Sodium sulfite is an inorganic compound, typically appearing as a white crystalline powder or granules, easily soluble in water, with an alkaline aqueous solution. It is readily oxidized in air, possesses strong reducing properties, and is widely used in industrial, food, and pharmaceutical fields.

Product Specifications
Appearance: White crystalline powder or granules
Purity: ≥96% / ≥98% (custom specifications available based on client requirements)
pH Value (10% aqueous solution): 9.0-10.5
Water Insolubles: ≤0.01%
Heavy Metals (as Pb): ≤0.001%

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Main Applications
1. Food Industry:
- Used as a food additive (E221) for preservation, antioxidation, and extending shelf life.
- Commonly applied in the processing of dried fruits, candied fruits, juices, alcoholic beverages, and other food products.
2. Industrial Field:
- Serves as a reducing agent, widely used in textiles, papermaking, printing, and dyeing industries.
- Functions as a bleaching and dechlorinating agent in the papermaking industry.
- Utilized in water treatment to remove residual chlorine and heavy metal ions.
3. Pharmaceutical Industry:
- Acts as a drug ingredient or excipient in the preparation of certain medications.
- Used as a chemical reagent in laboratories.
4. Photography Industry:
- Employed as one of the components in developing agents.

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Packaging and Storage
Packaging: 25kg/bag (lined with plastic bag, outer woven bag), or customized according to client requirements.
Storage: Should be stored in a cool, dry, and well-ventilated warehouse, avoiding contact with oxidizers and acidic substances, and protected from moisture.

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Safety Precautions
1. Sodium sulfite may cause mild irritation to the skin and eyes; protective gloves and goggles should be worn during handling.
2. Avoid inhaling dust; ensure the operating environment is well-ventilated.
3. In case of accidental contact with skin or eyes, rinse immediately with plenty of water and seek medical attention.
4. Keep away from fire sources and oxidizers to prevent chemical reactions.

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Transportation Information
- Protect from sunlight, rain, and moisture during transportation.
- Transport as general chemicals; avoid mixing with strong oxidizers.
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