Guangzhou Zhifan Chemical Co., Ltd.
Procurement and channel specialists with extensive experience in the chemical industry offer the latest product consultation and market updates. With over 5,000 square meters of dedicated chemical warehouses strategically located in South China near Guangzhou Nansha Port and Shenzhen Port, international shipping is convenient. Our company is qualified to handle dangerous goods and ensures quality through inspection reports.
active members
years experience
Warehouse area
Spot quantity
Core strengths
For over 15 years, Zhifan Chemical has been a trusted name in the industry, offering a wide range of products including sodium hydroxide, sodium sulfide, polyaluminum chloride, polyacrylamide, oxalic acid, compound alkali, sodium hydrosulfide, sodium metabisulfite, ferrous sulfate, soda ash, glucose, citric acid, industrial salt, and defoaming agents.
Professional team with 15 members
Produced in China, sold worldwide
15 years of experience
High-Quality, customer first
Sodium sulphite
Sodium sulphite is a white or yellowish crystalline powder, also known as sodium thiosulfate or sodium bisulfite. It is easily soluble in water, hygroscopic, and gradually oxidized to sodium sulfate in the air. Sodium sulphite is widely used in industry, such as as a reducing agent, bleaching agent and preservative, and is also used in the manufacture of other chemicals such as sodium thiosulfate, organic chemicals, etc. In addition, in the food industry, sodium sulfite is commonly used as a bleaching agent, preservative, loosening agent and antioxidant to extend the shelf life of food and improve its appearance and taste.
High quality
competitive price
professional team
one-stop solution
| ITEM | SPECIFICATION | TEST RESULT |
| Na2SO3 content : | 96.0 %min | 96.58% |
| Sodium sulphate : | 2.5%max | 1.30% |
| Sodium chloride (NaCL): | 0.1%max | 0.08% |
| Iron (Fe) : | 30ppm max | 15ppm |
| Water insoluble : | 0.02%max | 0.02% |
| HEAVY METAL AS PB | 10ppm max | 5ppm |
| Free alkali (as Na2CO3) : | 0.10%max | 0.00% |
| Arsenic: | 2ppm max | 1.5ppm |
Key Uses:
Develops visible images in photography and imaging technology
Effective in killing bacteria and viruses for water purification and medical tool disinfection
Commonly used in the food industry for shelf life extension and food quality improvement
Utilized in textile printing and dyeing as a bleaching agent and vat residual dye
Chemical Industry
Water Treatment
Food Industry
Storage conditions: Sodium sulphite should be stored in a cool, ventilated warehouse, away from fire and heat sources, and direct sunlight. It should be kept separate from oxidants, acids, and alkalis to prevent dangerous mixing.
Operational safety: Operators must undergo special training and strictly follow operating procedures. During use, wear appropriate protective equipment such as self-priming filter dust masks, chemical safety glasses, rubber acid, and alkali resistant clothing, and gloves to prevent contact with harmful substances.
Precautions for use: Sodium sulphite is easily decomposed, so it is best to prepare it for immediate use. In the food industry, its solution should be prepared and used promptly to maintain effectiveness. Avoid direct contact with substances containing metal ions to prevent chelation reactions.
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FAQ
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