Sodium metabisulphite

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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.
 

Item
Company standard
Assay ( as Na2S2O5 ) % °›
96.0
Fe % °‹
0.005
Clarity
clear
Heavy metal (Pb)% °‹
0.001
As % °‹
0.0002

 
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.

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