CAS NO.********4
H.S Code: *******0
Property: white powder
Sodium Sulphite(Industry Grade)(HG/T ***7 ***0)
Specifications Premium grade First grade Second grade
Sodium Sulphite% > *7.0  *6.0  *3.0
Fe %< 0.**3 0.**5 0.*2
Water insoluble matter %< 0.*2 0.*3 0.*5
Free alkali %< 0.*0 0.*0 0.*0
Sulfate radical %< 2.5 - -
Sodium Chloride %< 0.*0 - -

Sodium Sulphite (Food Grade)(GB ***4 *2)
Specifications Standard
Sodium Sulphite%> *6.0
Fe% < 0.*1
Water insoluble matter %< 0.*3
Free alkali %< 0.*0
Sulfate radical %< 2.5
Heavy metals(Pb)% < 0.**1
As % < 0.***2

sodium metabisulfite: *4% min
Fe: 0.**5% max
PH: 4.**4.6
Pb:0.**2% max
As:0.***2% max
Water insoluble: 0.*5% max

Sodium Metabisulfite *6.5%min (food grade and tech. grade)
Chemical formula: Na2S2O5
H.S Code: *******0
Packing:
 *5kg, *0kg,***0kg or ***0kg plastic woven bag lined with one layer polythene bag
Product Feature
White or slightly yellowish crystalline powder
Product Specification / Models
high quality Sodium Metabisulfite *6.5%min food grade and tech. grade
Packing: *5kg PP bag
Application
Widely used in leather tanning, cloth knitting, organic matters blanching, mordant, food preservation, brewing, sterilization and antisepsis of beverage, synthetic organic reducers for photography, rubber coagulators and spices