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Sodium Meta Bi Sulfite Pwd.

Sodium metabisulfite  is an inorganic compound frequently used as a disinfectant, antioxidant and preservative agent.  It is used as a cleaning agent for potable water reverse osmosis membranes in des [+] Read More...
Article News:
Packing Size:
25.00 Kg.(PWD)
Available Packing Size:

500gram / 1 Kg / 5 Kg / 25 Kg / 50 Kg.

Sodium Meta Bi Sulfite Pwd.
Dechlorination  When RO or NF membrane is used in the RO/NF process, the feed must be dechlorinated to prevent oxidation of the membrane. RO membranes have some chlorine tolerance before noticeable [+] Read More...
Using Procedure:
Reaction : 1> When Sodium Meta-Bisulfite Reacts with water releases sulfur dioxide (SO2).      Released sulfur dioxide SO2 however makes the water a strong Reducing Agent. 2> Sodium metabisulfite releas [+] Read More...
Mordant; Dechlorinating agent; Reducing agent and sulfonating agent; Bleaching agent for bamboo, wood, paper fiber; Flotation reagent for nonferrous metals; waste water treatment chemical
Technical Specifications:



Industrial Standard (best quality)


Na2S2O5 % ≤ 



Fe %≤ 



Insol. in water%≤



Arsenic ≤




Molecular formula    Na2S2O5, Na-O-(S=O)-O-(S=O)-O-Na
Molar mass              190.107 g/mol
Appearance              white to yellow powder
Odor                           faint SO2
Density                     1.48 g/cm3
Melting point    
>170 °C (begins at 150 °C)

Solubility in water    54 g/100 mL (20 °C)
81.7 g/100 mL (100 °C)

Solubility                 very soluble in glycerol

soluble in ethanol



EU Index 016-063-00-2 EU classification Harmful (Xn) Irritant (Xi) R-phrases R22 R31 R41 S-phrases (S2) S26 S39 S46

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Sodium Meta Bi Sulfite Pwd.
Sodium Meta Bi Sulfite Pwd.
Sodium Meta Bi Sulfite Pwd.
Sodium Meta Bi Sulfite Pwd.

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