China (Mainland)
1.Featurewhite or yellowish crystalline powder
2.PackageIn PP woven bag lined with PE bag. 25, 50, 1000 kgs/bag.
3.Shiping: Tianjin Port
4.production specifications :
Industrial Grade Sodium Metabisulfite
Item
Superior Grade
First Grade
Content(Na2S2O5)≥
96.0
94.0
Fe %≤
0.005
0.010
Insoluble Substance in Water
0.05
0.05
As %≤
0.0001
Uses:
Dyeing mordant, dechlorinating agent for washed fabric, medical deoxidizer and sulfonating agent, bone black for bamboo, wood and paper fiber, non-ferrous mineral separation agent, waste water disposing agent, rubber coagulator.
Food grade
Item
Index
Content (SO2)≥
65.0
Fe % ≤
0.005
Insoluble Substance in What
0.05
Heavy Metal (Pb)%≤
0.002
As %≤
0.0002
PH
4.06.0
Use :Bleaching agent(for sugar, pastry, dried slices of tender bamboo shoots,etc ), loosening agent(for bread, biscuit, etc ), corrosion protection antiseptic(fruit juice, can,etc ), antioxidant(for lily flower, sea food, fruit, vetegable,etc ) .
Packing: external polypropylene woven bag, polyethylene plastic bag lining