Sodium metabisulphite
Molecular formula :Na₂S₂O₅  
Molecular weight : 190.10 
CAS NUMBER: 7681-57-4

Appearance :
white or light yellow crystalline powder , 
relative density is 1.4 . 
Uses: It can be used as the material of medicine, or 
used as curing agent of rubber; It also can be used
as dechlorinating agent and scouring agent of textile; 
It also can be used in the process of leather Moreover,
it can be used as the material of fine chemicals, or 
used as developer; In food industry, It can be used 
as bleaching agent, loosening agent, antisepsis 
bactericide and antioxygen antistaling agent. 

Packing : External packing is PP woven bag, Internal packing is PE bag, the thickness ≥0.05mm.
Storage & defence: Stored in cool and dry place, avoid moisture and heat. No breakage, No 
mixed with oxidant and toxic matter. The storage period is 6 month since the production date. It 
should be transported by clean car, with covering matter, avoid raining. 
Netwt. : 25kg, 50kg, 1000kg/bag.