Sodium metabisulfite is white or yellow crystalline powder or crystals, with a strong smell of SO2, specific gravity is 1.4, soluble in water, acidic aqueous solution, contact with strong acids are released SO2 and generate the corresponding salts, for a long time in the air and oxidized to Na2S2O6, Products can't exposed to the air for long-term. Higher than 150 ℃ Namely, after the decomposition get SO2. soluble in water, acidic aqueous solution. Soluble in glycerin, slightly soluble in ethanol.
1,Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc);
Loose agent (e.g. bread, cracker etc);
Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc.) ;
Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc.)
2,Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching ; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde. The hide profession employ to do to molt dose and pliable dose and wearproof dose ; sewage treatment, and so on .
3,Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.
4,Photo Grade:The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.
