Potassium Hydrogen Sulfite

High Purity Potassium Hydrogen Sulfite Manufacturer & Supplier

Potassium Hydrogen Sulfite is an inorganic potassium salt widely used as a reducing agent, preservative, antioxidant, and chemical intermediate in industrial applications. It is the potassium bisulfite form of sulfurous acid and provides excellent reducing properties due to its active sulfite group.

With strong oxygen-scavenging capability, good water solubility, and effective sulfur dioxide release characteristics, Potassium Hydrogen Sulfite is widely applied in water treatment, food processing, chemical synthesis, photographic chemicals, and industrial preservation systems.

We supply high-quality Potassium Hydrogen Sulfite with stable chemical performance, strict quality control, competitive specifications, and reliable global export capability.

Product Information

Product Name

Potassium Hydrogen Sulfite

Common Names

• Potassium Hydrogen Sulfite

• Potassium Bisulfite

• Potassium Acid Sulfite

• Potassium Bisulphite

• Sulfurous Acid Potassium Salt

CAS Number

7773-03-7

Molecular Formula

KHSO₃

Molecular Weight

120.17 g/mol

Chemical Type

Inorganic sulfite salt

Appearance

White crystalline powder or colorless solution

Potassium Hydrogen Sulfite Specifications

Customized specifications are available according to customer requirements.

Key Features of Potassium Hydrogen Sulfite

1. Excellent Reducing Properties

Potassium Hydrogen Sulfite provides strong reducing ability due to the sulfite ion.

Key characteristics:

• Effective oxygen scavenger

• Prevents oxidation reactions

• Maintains chemical stability

• Suitable for reducing environments

2. High Water Solubility

Potassium Hydrogen Sulfite dissolves easily in water, providing:

• Fast preparation of aqueous solutions

• Convenient industrial application

• Uniform reaction performance

3. Sulfur Dioxide Release Capability

In acidic conditions, Potassium Hydrogen Sulfite can release sulfur dioxide (SO₂), making it useful in:

• Preservation systems

• Chemical processing

• Reducing applications

4. Stable Industrial Performance

Advantages include:

• Reliable chemical performance

• Easy handling

• Wide application compatibility

• Cost-effective functionality

Applications of Potassium Hydrogen Sulfite

1. Water Treatment

Potassium Hydrogen Sulfite is widely used in water treatment systems as a reducing agent.

Applications:

• Oxygen removal

• Boiler water treatment

• Industrial water systems

• Dechlorination processes

Benefits:

• Removes dissolved oxygen

• Protects metal equipment from oxidation

• Improves water system stability

2. Chemical Industry

Potassium Hydrogen Sulfite is used as a chemical reducing agent and intermediate.

Applications:

• Organic synthesis

• Sulfur-containing compound preparation

• Chemical processing

Functions:

• Reduction reactions

• Oxygen removal

• Reaction control

3. Food and Beverage Processing

Food-grade Potassium Hydrogen Sulfite may be used as a preservative and antioxidant depending on regional regulations.

Applications:

• Beverage processing

• Fruit preservation

• Food ingredient protection

Functions:

• Prevents oxidation

• Helps maintain product quality

• Controls unwanted microbial growth

(Application must comply with local food regulations.)

4. Pharmaceutical and Fine Chemical Industry

Used as a reducing agent in:

• Pharmaceutical intermediate synthesis

• Fine chemical production

• Laboratory chemical processes

5. Photography and Printing Industry

Potassium Hydrogen Sulfite has applications in:

• Photographic chemical formulations

• Processing solutions

• Reducing systems

6. Industrial Preservation Systems

Used in:

• Water-based formulations

• Industrial chemical preservation

• Storage stabilization systems

Advantages of Our Potassium Hydrogen Sulfite

Reliable Product Quality

We provide:

✔ High purity Potassium Hydrogen Sulfite
✔ Stable reducing performance
✔ Strict quality inspection
✔ Consistent batch quality

Flexible Supply Capability

Available options:

• Laboratory samples

• Trial orders

• Industrial bulk supply

• Customized packaging

Professional Export Service

We provide:

• SDS documentation

• COA certificates

• Technical Data Sheets

• International logistics support

Packaging and Storage

Standard Packaging

Available packaging:

• 25 kg PP woven bags with PE liner

• 25 kg fiber drums

• Customized packaging

Storage Recommendations

Store Potassium Hydrogen Sulfite:

• In a cool and dry warehouse

• In tightly sealed containers

• Protected from moisture

• Away from strong oxidizing agents

• Avoid exposure to excessive heat

Because sulfite salts may gradually oxidize when exposed to air, proper storage conditions are recommended.

Technical Data Sheet (TDS)

Frequently Asked Questions (FAQ)

What is Potassium Hydrogen Sulfite?

Potassium Hydrogen Sulfite is an inorganic potassium sulfite compound used as a reducing agent, antioxidant, preservative, and chemical intermediate.