Sodium Sulfite Basf

Sodium sulfite 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 sulfite 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.

Sodium sulfite has many uses. In industry, it is mainly used as reducing agent, bleaching agent and preservative. For example, it reacts with silver salts to develop visible images on exposed film, so it is often used in photography and imaging technology. In addition, due to its reducing properties, sodium sulfite is also effective in killing bacteria and viruses and is used to purify water or disinfect medical tools. 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. At the same time, in the textile printing and dyeing industry, sodium sulfite is also used as a bleaching agent and vat residual dye.

Operational safety: Operators should receive special training and strictly abide by operating procedures. During operation, appropriate protective equipment should be worn, such as self-priming filter dust masks and chemical safety glasses, as well as rubber acid and alkali resistant clothing and rubber acid and alkali resistant gloves to prevent contact with dust and harmful substances.

Precautions for use: Sodium sulfite is easily decomposed and becomes ineffective, so it is recommended to prepare it for immediate use. In the food industry, since its solution is unstable and volatile, it should be prepared and used immediately to maintain its effectiveness. In addition, since sodium sulfite is prone to chelation reactions with metal ions, direct contact with substances containing metal ions should be avoided.