7775-14-6

Basic information

• Product Name: Sodium dithionite
• Synonyms: Blankit;Sodium hyposulfite;Dithionous acid,disodium salt;Dithionous acid, disodium salt;Hydrosulfite R Conc;V-Brite B;Sodium dithionite or sodium hydrosulfite [UN1384] [Spontaneously combustible];Disodium dithionate;Sodium sulfoxylate;Disodium hydrosulfite;Burmol;Sodium hydrosulphite;Vatrolite;Blankit IN;Hydros;Natriumhydrosulfit;Sodium Hydrosulfite (Albite A);Dithionous acid disodium salt;Sodium Hydrosulfite;Sodium hydrosulfite;sodium hydrosulfite; Sodium dithionite
• CAS NO: 7775-14-6
• Molecular Formula: Na2O4S2
• Molecular Weight: 174.10714
• EINECS: 231-890-0
• Mol File: 7775-14-6.mol
• Article Data: 0

Chemical Properties

• Melting Point: 300℃ (dec.)
• Boiling Point: 1390 °C
• Appearance: white solid
• Density: 2.19 g/cm³
• Vapor Density: 3.6 (vs air)
• Water Solubility: 250 g/L (20℃)
• CAS DataBase Reference: Sodium dithionite(CAS DataBase Reference)
• NIST Chemistry Reference: Sodium dithionite(7775-14-6)
• EPA Substance Registry System: Sodium dithionite(7775-14-6)

Safety Data

• Hazard Codes: Xn:Harmful
• Statements: R22:; R31:; R7:
• Safety Statements: S26:; S28A:; S43E:; S7/8:
• RIDADR: 1384
• HazardClass: 4.2
• PackingGroup: II
• Hazardous Substances Data: 7775-14-6(Hazardous Substances Data)

Usage

Description

Sodium dithionite, also known as sodium hydrosulfite, is a white or light yellow crystalline powder that is soluble in water. It is a powerful reducing agent with a wide range of applications across various industries.

Uses

Used in Textile Industry:
Sodium dithionite is used as a bleaching agent and to remove excess dyes from fabrics, enhancing the quality and appearance of textiles.
Used in Paper Industry:
In the paper industry, sodium dithionite is used to brighten pulp and reduce the yellowing of paper, improving the visual appeal and longevity of paper products.
Used in Water Treatment:
Sodium dithionite is used in water treatment to remove excess chlorine and detoxify cyanide, ensuring the safety and purity of water supplies.
Used in Food Industry:
In the food industry, sodium dithionite is used as a reducing agent and a preservative for some types of food, extending their shelf life and maintaining their quality.
Used in Chemical Synthesis:
Sodium dithionite is utilized in chemical synthesis as a reductant in organic reactions, facilitating the production of various chemicals and compounds.
However, it is important to note that sodium dithionite is a hazardous chemical and should be handled with care. It is known to release toxic fumes when heated and can cause irritation upon contact with skin or eyes.

InChI:InChI=1/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2