Functions and uses of sodium hydrosulfite

1, function: Sodium hydrosulfite is widely used in reduction dyeing, reduction cleaning, printing decoloration and bleaching of silk, wool, nylon and other fabrics in textile industry; Used for food bleaching; Used as reducing agent or bleaching agent in organic synthesis.

2. Spraying method: Dissolve or suspend sodium hydrosulfite in a proper liquid and spray it evenly on the leaves of crops through a sprayer. This method is suitable for protecting leaves and controlling pests and diseases.

3. Application method: Apply sodium hydrosulfite directly to crop leaves or soil surface. This method is suitable for crops that control pests and diseases in soil.

4. daubing method: dissolve or suspend sodium hydrosulfite in an appropriate liquid and daub it on crop leaves with a brush or a spray gun. This method is suitable for crops that pay attention to the protection and prevention of leaves.

5. The aqueous solution of sodium hydrosulfite is unstable and belongs to a strong reducing agent. Exposure to air is easy to absorb oxygen and oxidation, and it is also easy to absorb moisture and deteriorate when heated, and it can seize oxygen in the air and agglomerate, giving off an irritating sour taste. Heating sodium dithionite or contact with open flame will cause combustion, and the spontaneous combustion point is 250℃.