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

General 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 that is commonly used in industries such as textile, paper, and water treatment. In the textile industry, it is used as a bleaching agent and to remove excess dyes from fabrics. In the paper industry, it is used to brighten pulp and to reduce the yellowing of paper. In water treatment, it is used to remove excess chlorine and to detoxify cyanide. Additionally, sodium dithionite is used in the food industry as a reducing agent and as a preservative for some types of food. It is also used in chemical synthesis and as a reductant in organic reactions. Despite its wide range of applications, sodium dithionite is a hazardous chemical and should be handled with care, as 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