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Juan Messina S.A. - Industrias Químicas - Sarmiento 451 - Villa Nueva - Guaymallén CP (M5521GKG)
Mendoza - Argentina - Teléfono - Fax: (0054) (0261) 4450909 ....-....E-mail: info@juanmessina.com.ar
SODIUM METABISULFITE
Data Sheet

Product name: Sodium Metabisulfite
Chemical name: Sodium bisulfite powder, Dry Bisulfite, Sodium Pyrosulfite.
Chemical formula: Na2S2O5.
Appearance: small, needle-shaped, free-flowing White crystals.
Packaging: 25-kg polyethylene bags (55lb) and 700-1000-kg bags (1543-1843lb).


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Product:
Sodium Metabisulfite - Food Grade
Product identification in the program: "Manufactured Products Control"
Code: MBSSA06042009

SPECIFICATIONS
Parameter
Unit
Minimum
Maximum
pH (10% solution in water)
-
4.00
5.00
Purity - MBSS
% (p/p)
97.00
99.90
SO2 content
% (p/p)
65.40
67.33
Appearance Small, needle-shaped, free-flowing white crystals




Product:
Sodium Metabisulfite - Technical grade
Product identification in the program: "Manufactured Products Control"
Code: MBSST06042009

SPECIFICATION
Parameter
Unit
Minimum
Maximum
pH (10% solution in water)
-
4.00
5.00
Purity - MBSS
% (p/p)
95.00
97.00
SO2 content
% (p/p)
64.00
65.40
Appearance Small, needle-shaped, free-flowing white crystals.
Product Applications:



Textile industry: as anti-chlorine and bleaching agent.

Paper industry: as an anti-chlorine and bleaching agent

Tannins: Brichromate reducing agent and tannin solubilizer in tannery.

Water treatment: used for effluent treatment, in galvanoplasty and fishing.

Tannery: for trapping hydrogen sulfide gases.

Food industry: as an additive (preservative), antioxidant, bacteriostat. Antioxidant for vegetable products and fruit juice production.

Dry cleaning: as a chlorine neutralizer

Photography: in reverse osmosis desalination plants, to remove chlorine excess and preserve membranes. It is also used as photographic fixer reducing agent.

Others: chemical synthesis, fiber production, vitamin k, vitamin A, pharmaceutical intermediaries.