1. Used as a coloring agent in the processing of meat products 2. Used as mordant, bleach, metal heat treatment agent, electroplating corrosion inhibitor, used as disinfectant, preservative, etc. 3. Used as mordant, bleach, metal heat treatment agent, electroplating corrosion inhibitor, medical use as instrument disinfection, preservative 4. For the production of ice dyes, sulphur dyes, direct dyes, acid dyes, disperse dyes, basic dyes, dye aids, and H porogens. 5. Used as a coloring agent in the processing of meat products, it can be used in canned meat and meat products. Can improve the flavor of cured meat. Can be used as a preservative.