Sodium Hydrosulfite Properties, Molecular Formula, Applications - WorldOfChemicals

Sodium Hydrosulfite Properties

Sodium Hydrosulfite

Sodium Hydrosulfite-Molecule 3D Struture
Molecule 3D Structure Image
Sodium Hydrosulfite 3D Structure -Molecule Struture
Molecule Structure Image



Sodium Hydrosulfite is a white powder.It is readily soluble in water and shows powerful reducing action in aqueous solutions. Sodium hydrosulfite is used as a reducing agent in dying application. It undergoes reduction reaction with water-insoluble vat dye and sulfur dye to form water-soluble alkali metal salt of the dye (leuco form ).Sodium hydrosulfite improve the colour fastness. Sodium hydrosulfite's reduction reaction removes residual oxide and wrong pigments.It is a reductive bleaching agent. It reduces carbonyl and alcohol groups, which function as colorants of the substances.

Chemical Properties

Appearance White Solid
Boiling Point 1390°C
CAS Number 7775-14-6
Chemical Composition Etanol-->Sodium Hydroxide-->Methanol-->Zinc-->Sulfur Dioxide-->Sodium Metabisulfite-->Sodium Formate-->Zinc Hydroxide-->Sodium Sulfite Heptahydrate-->Zinc Hydrosulfite
Density 2.13 g/cm3
EINECS Number 231-890-0
InChI 1S/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
Melting Point 300 °C
Molar Mass 174.11 g/mol
Molecular Formula Na2O4S2
NFPA 704 H-2, F-1, R-2, C-NA
RTECS Number JP2100000
Solubility 250 g/l
Synonyms Dithionous Acid Disodium Salt;Hydrosulfite;Sodium Hypodisulfite;Sodium Dithionite;Sodium Hydrosulfite;Sodium Hydrosulphite;Blankit;Burmol