Manufacturer Sodium Metabisulphite

Product Specifications

Prod Model:	96%, 97%, 98%
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Name:	Sodium Metabisulphite
CAS No.:	7681-57-4
Mf:	Na2s2o5
Appearance:	Powder
Grade Standard:	Industrial Grade

Product Description

Manufacturer  Sodium Metabisulphite

Another name: Sodium pyrosulfite
Sodium metabisulphite
Formula: Na2S2O5
CAS No.: 7681-57-4

Usage: Sodium metabisulphate (SMBS) is used as a food additive, leaching agent for textile fibres;
Colors stripper and dechlorination; Preparation of Indigo Vat Dye; Solubilizing And acidyfing agent for leather industries; Bleaching agent


Sodium Metabisulfite (SMBS)
 
is mainly used as reduction agent. Furthermore, sodium metabisulfite is ideal for the bleaching of vegetable fibers and textile, for the production of solutions, which are used in the developing of photos and films as well as for the treatment of tanning agents in dyeing of textiles. ChoiceChem offers different grades' sodium metabisulfite, all meeting highest quality standards.
 

CAS RN.:	7681-57-4
EINECS:	231-673-0
H.S.CODE:	2832.1000.00

 
1. Chemical Analysis
 

Component	Range	Typical
Assay(Na2S2O5 )	96.0% min.	97.5%
Iron content(base on Fe)	0.005% max.	0.002%
water insoluble matter	0.05% max.	0.02%
Arsenic content(base on As)	1 ppm max.	1ppm
Pb	10 ppm max.	5ppm
Appearance	White or yellowish crystalline powder
Test Standard	Food Grade:   GB 1893-2008
	Industrial Grade: HG/T2826-1997

 
 
2. Application
 

Industrial Uses
Water Treatment	Eliminating dissolved oxygen in waste water and in pipes; Cleaning water pipes and reverse osmosis membranes in desalinization equipment as it is an antibacterial. Sodium metabisulfite is used in water treatment plants to remove excess chlorine.
Bleaching Agent	Sodium metabisulfite's functions as a bleaching agent, which is useful in making paper pulp, cotton and wool.

 

Food Preservative
Antimicrobial	Sodium metabisulfite is commonly used as a food preservative for dried foods, as well as fruit concentrate juices. Sodium metabisulfite acts as an antimicrobial, inhibiting the growth of fungi and bacteria, thereby keeping food fresh and safe.
	In beer and wine manufacturing, sodium metabisulfite is used as both a sterilizer and an antioxidant in the process of brewing beer or fermenting wine.