Product Specification:
Chemical formula :Na2S2O5
Density:1.48
molecular weight:190.09
Appearance:white powder
CAS logon number :7681-57-4
Sodium Pyrosulfite
14-21 days
Packaging Details：Sodium Metabisulfite (SMBS) will be packed in N.W25kg plastic woven bag within PE liner or Kraft paper bag within PE liner,or 500kg/1000kg/1100kg/1200kg jumbo bag.20MT-25MT will be loaded in 1*20'fcl container.
Sodium metosulfite is white or yellow crystalline powder or small crystal, with strong smell of SO2, specific weight 1.4, soluble in water, the aqueous solution is acidic, contact with strong acid will release SO2 and generate the corresponding salt, long time in the air, it will be oxidized into Na2S2O6, so the product can not be stored for a long time.Above 150 degrees Celsius, SO2 is decomposed.
Application:
(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.
Safety information：Dangerous goods mark Xn,XiDanger class code 22-31-41-36/37/38-52Safety instructions 26-39-46-36-16Dangerous goods transport no. 3260