Sodium metabisulfite is a chemical compound commonly used in various applications:Food and beverage industry: It is used as a preservative and antioxidant to extend the shelf life of food and beverages. It can prevent the growth of bacteria and fungi, and it is commonly used in fruit juices, wine, and dried fruits.Water treatment: Sodium metabisulfite is used to remove excess chlorine and chloramine from water, making it safe for consumption. It can also be used to reduce dissolved oxygen levels in water, which can be beneficial in certain industrial processes. Photographic industry: It is used as a developing agent and preservative in the development of photographic film and prints.Textile industry: It is used in textile processing to bleach and desulfurize fabrics. Pharmaceutical industry: Sodium metabisulfite is used as a reducing agent in some pharmaceutical preparations.Other industrial applications: It is used in various industrial processes such as in the production of pulp and paper, as a bleaching agent, and in the mining industry for mineral processing.These are just a few examples of the many uses of sodium metabisulfite in different industries.White appearance Water treatment Reducing Agent1..Water treatment: It is utilized for dechlorination and reducing excess chlorine in water treatment processes. It can also serve as a reducing agent to remove traces of dissolved oxygen. 2. Photographic industry: Sodium metabisulfite is employed as a developing agent and a preservative in photographic film and paper processing. 3. Textile industry: It is used in the textile industry for dyeing and printing processes to help fix colors and remove excess dye. 4. Pharmaceutical industry: It can be used as a reducing agent and as a preservative in some pharmaceutical preparations. 5. Other industrial applications: This compound has various other applications, including as a bleaching agent in pulp and paper processing, in mineral processing, and in chemical synthesis.1.It is used for dyeing candle? Yes, it is popular using. 2.How many kg one bag? 25kg. 3.How to get free samples? Please chat with us online or send email to us.