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Sodium Dithionite

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MOQ : 50 Kilograms

Sodium Dithionite Specification

Ingredients
Sodium dithionite

Ph Level
Neutral to slightly alkaline

Grade
Industrial Grade

Molecular Formula
Na2S2O4

Poisonous
Yes; harmful if swallowed or inhaled

Smell
Characteristic, slight sulfur odor

Solubility
Soluble in water

Physical Form
Powder

Appearance
White to light yellow crystalline powder

Application
Textile, Paper, Dye Industry, Water Treatment, Leather and Chemical Processing

Density
2.19 Gram per cubic centimeter(g/cm3)

Usage
Used as a reducing agent, bleaching agent, and decolorizing agent

EINECS No
231-548-0

Properties
Strong reducing agent; decomposes in air; releases sulfur dioxide; soluble in water

HS Code
28319090

Molecular Weight
174.1 g/mol

Product Type
Industrial Chemical

Storage
Store in cool, dry, well-ventilated area; keep container tightly closed; protect from moisture

CAS No
7631-90-5

Shape
Granular or powder

Melting Point
Decomposes below 70C

Purity
Up to 90% min

Shelf Life
12 months

Structural Formula
Na2S2O4

Appearance After Dissolution
Clear, colorless solution

Packaging Type
25 kg/50 kg HDPE bags with inner liner

Odor Threshold
Not determined

Flash Point
Non-flammable

Boiling Point
Not applicable, decomposes before boiling

Storage Temperature
Below 40°C

Transport Regulation
Classified under hazardous chemicals

Particle Size
Fine powder, typically below 100 mesh

Hazard Statements
Harmful if swallowed or inhaled; causes irritation to skin and eyes

Stability
Decomposes rapidly in presence of moisture and oxygen

UN Number
UN 1384

Compatibility
Incompatible with oxidizing agents, acids, and moisture

Ecological Information
Hazardous to aquatic environments

Sodium Dithionite Trade Information

Minimum Order Quantity
50 Kilograms

Supply Ability
1 Kilograms Per Week

Delivery Time
1 Week

About Sodium Dithionite

Sodium Dithionite

CAS No.: 7775-14-6

Molecular Formula : Na2 O4 S2

Molecular Weight : 174.10

Appearance : White to Gray-White crystalline powder

Assay : 85% or 88% or 90% min

InsolubleIn Water : 0.1% max

Na2S2O3 : 1.2% max

Na2S2O5 : 5-7%

NaHSO3 : 0.5% max

Na2CO3 : 0.6-2%

HCOONa : 0.5% max

Zn : 0.0001% max

Pb : 0.0001% max

Fe : 0.005% max

Applications and Industrial Use

Sodium Dithionite is widely utilized in the textile, paper, dye, water treatment, leather, and chemical processing sectors. Its powerful reducing capabilities make it an effective bleaching and decolorizing agent, improving product quality and process efficiency. As an industrial grade chemical, it is distributed and supplied across India by various channels including manufacturers, exporters, importers, and retailers.

Safe Handling and Storage Guidelines

Due to its instability and hazardous nature, Sodium Dithionite must be stored in a cool, dry, and well-ventilated place, with the container tightly sealed to prevent contact with moisture and air. These precautions help maintain its efficacy, prevent rapid decomposition, and minimize exposure risks during handling and transportation.

Physical and Chemical Properties

This product appears as a fine powder or granules, with particle sizes typically below 100 mesh. It possesses a neutral to slightly alkaline pH and density of about 2.19 g/cm. Sodium Dithionite decomposes before reaching its boiling or melting points, is non-flammable, and is soluble in water. Its molecular formula is Na2S2O4, with a molecular weight of 174.1 g/mol.

FAQs of Sodium Dithionite:

Q: How should Sodium Dithionite be stored to maintain its stability and effectiveness?

A: Sodium Dithionite should be kept in tightly closed HDPE bags with an inner liner, stored in a cool, dry, and well-ventilated area below 40C to avoid contact with moisture and oxygen, which can cause rapid decomposition.

Q: What is the recommended process for dissolving Sodium Dithionite in water?

A: Add the powder slowly to water while stirring continuously in a well-ventilated environment. This creates a clear, colorless solution suitable for industrial use, but ensure containment to prevent exposure to air, as it can decompose and release sulfur dioxide gas.

Q: When is Sodium Dithionite commonly used in industrial applications?

A: It is primarily used as a reducing, bleaching, and decolorizing agent in the textile, paper, dye, water treatment, leather, and chemical processing industries, contributing to improved color removal and process efficiency.

Q: Where should Sodium Dithionite be handled and stored for maximum safety?

A: Handling and storage should occur in designated chemical storage areas that are cool, dry, well-ventilated, and away from oxidizing agents, acids, and sources of moisture to ensure both safety and product stability.

Q: What benefits does Sodium Dithionite offer during the bleaching and reducing processes?

A: Its strong reducing action facilitates efficient removal of unwanted colors and impurities, thereby enhancing product brightness and quality in treated materials, especially in textiles and paper manufacturing.

Q: Is Sodium Dithionite safe to use around aquatic environments?

A: No, Sodium Dithionite is hazardous to aquatic environments. Careful management of spills and waste disposal is critical to prevent contamination of water sources.

Q: How is Sodium Dithionite packaged and transported for industrial use?

A: It is packaged in 25 kg or 50 kg HDPE bags with inner liners and classified as a hazardous chemical (UN 1384) for transport, adhering to regulations to ensure safe handling and minimize risk during distribution.

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