Formula:Na2S2O5
Dangerous Type:
CAS NO:7681-57-4
(UNNO):
HS:28321000
Rebates:0
quality standard (in accordance with GB-1893-1998)
1.(appearance: sodium pgrosulfite sulfite grade one is white crystal powder)
2.(food additive sodium pgrosulfite shall meet the following requirements):
(name of parameter) (parameter)
main content(Na2S2O5),%≥ 95.0
content of iron(Fe),% ≤ 0.005
clarity
content of heavy metal in pb(pb),% ≤ 0.001
content of arsenic AS(AS),% ≤ 0.0002
Packing: liner packing is PE-plastic bag, outer packing is plastic woven bag, 25kg 50kg 1000kg/per bag
Stored in dry and cool place.
Applications: sodium pgrosulfite is widely used in tanning, fabrics and bleaching organics, as dye mordant in printing and dyeing, for preserving foods, brewery, sterilization and rot-proof agent. It is also used in organic composition (manufacture of hydantoinate) and photography (as reducing agent). It can be used as rubber coagulator and spice.