Sodium dithionite



Sodium dithionite
General
Other names Dithionous acid, disodium salt
D-Ox
Hydrolin
Reductone
Sodium dithionite
Sodium dithionite hydrate
Sodium hydrosulfite
Sodium sulfoxylate
Sulfoxylate
Vatrolite
Virtex L
Molecular formula Na2O4S2
Molar mass 174.09714 g mol−1
Appearance White to grayish crystalline powder
CAS number [7775-14-6]
Properties
Density and phase 2.19 g cm−3, solid
water soluble
Other solvents insoluble in alcohol
Melting point 52°C (325 K)
Boiling point Decomposes
Hazards
Toxicity LD 50: 5 g/kg (oral in rats)
Main hazards flammable solid
Flash Point 90 C (363 K)

Sodium dithionite (aka sodium hydrosulfite or sodium hydrosulphite) is a white solutions. It can be obtained by the following reaction:

2NaHSO3 + Zn → Na2S2O4 + Zn(OH)2

Applications

Industry

This compound is a water-soluble kaolin clay.

This chemical can also be used for water treatment, gas purification, cleaning, and stripping. It can also be used in industrial processes as a sulfonating agent or a sodium ion source. In addition to the textile industry, this compound is used in industries concerned with leather, foods, polymers, photography, and many others. Its wide use is attributable to its low toxicity LD 50 at 5 gms/kg., and hence its wide range of applications.

Biological sciences

Sodium dithionite is often used in physiology experiments as a means of lowering solutions' chelating agent.

See also
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sodium_dithionite". A list of authors is available in Wikipedia.