Sodium Bisulphite

Sodium Bisulphite
Being white crystalline solid with a pungent aroma of SO2, Sodium Bisulfite is able to dissolve in water. The solubility is 42g/100ml. And melting point is 150°C. When mixed with water, Sodium Bisulfite releases sulfur dioxide (SO2), a pungent, unpleasant smelling gas that can cause breathing difficulties to people.

Sodium bisulfite basic details:

Molecular formula

NaHSO3

Molecular Mass

104.061

CAS No

7631-90-5 

Sodium bisulfiteSpecification

Sodium Bisulfite

95%

SO2%

65%

Water insoluble

0.05%

Iron (Fe)%

50ppm

Heavy metal (Pb)

20ppm

Arsenic (As)

2ppm

pH

4.0-4.6


USES
Food Sodium Bisulfite is used directly as a bacterial inhibitor in the distilled beverage industries. Sodium bisulfite is also found in the potato, shrimp and cherry processing industries.
Photography Sodium bisulfite serves a dual purpose in photographic industry. It is responsible for preserving the thiosulfate in the fixing baths and scavenging the dissolved oxygen in the developer solution.
Textiles Sodium bisulfite is an important component in the preparation of dye intermediates. There are also areas of substantial utilization in the processing of wool as well as for the antichlor treatment required of many textile products.
Water Treatment Sodium bisulfite plays an important part in the treatment of water,
wastewater and waste as a strong reducing agent. The chemical removal of dissolved oxygen by chemically treating with sodium bisulfite reduces the corrosion rate in steel material. Sodium bisulfite also assists in the dechlorination of drinking water as well as in the chlorine removal in waste waters. Another treatment method that utilizes sodium bisulfite's effectiveness is in the reduction of chromium. All three reactions allow for chemical removal to be controlled by the amount of sodium bisulfite that is reacted with the solution
Other Related Products: Sodium Bisulphate