Description
Potassium Sulphite for Industrial, Food & Specialty Applications
Potassium Sulphite is a reliable chemical compound known for its excellent preservative, antioxidant, reducing, oxygen-scavenging, and process-stabilizing properties. It is widely used across food processing, water treatment, photography, X-ray development, dyes, pharmaceuticals, chemical processing, petroleum processes, and various industrial applications.
This product is available in both powder and liquid solution forms to meet different application needs. Powder grades are suitable for dry chemical handling, stable storage, food preservation, analytical use, and industrial processing, while the liquid solution grade is ideal for easy handling, quick mixing, and direct process application.
Potassium Sulphite helps prevent oxidation, support preservation, remove dissolved oxygen, stabilize photographic chemicals, and improve process efficiency. Its strong performance and flexible grade options make it a dependable chemical for domestic and export requirements.
Available Grades
Potassium Sulphite Powder Pure Grade
Potassium Sulphite Powder Pure Grade is a white free-flowing powder used in food processing, photography, water treatment, dyes, pharmaceuticals, chemical industry, and petroleum processes. It offers good solubility, stable performance, and reliable results for regular industrial applications.
Grade Details – Powder Pure Grade
Appearance: White free-flowing powder
Assay as K₂SO₃: 88% to 101%
pH: 8.0 to 9.0
Molecular Weight: 158.26
Solubility: Clear & colorless solution
Potassium Sulphite Powder Extra Pure Grade
Potassium Sulphite Powder Extra Pure Grade is a high-purity grade designed for laboratory, pharmaceutical, analytical, food and beverage, and high-precision industrial applications. It is preferred where superior quality, purity, consistency, and performance are essential.
Grade Details – Powder Extra Pure Grade
Chemical Name: Potassium Sulphite
Chemical Formula: K₂SO₃
Molecular Weight: 158.26 g/mol
CAS Number: 10117-38-1
Appearance: White crystalline powder
Purity / Assay: > 98.0%
Solubility: Freely soluble in water
pH (5% Solution): 9.0 – 10.5
Chloride (Cl): < 0.03%
Heavy Metals as Pb: < 5 ppm
Iron (Fe): < 10 ppm
Sulphate (SO₄²⁻): < 0.05%
Loss on Drying: < 2.0%
Potassium Sulphite Solution
Potassium Sulphite Solution is a clear liquid grade designed for easy handling, fast mixing, and direct industrial application. It is suitable for agricultural, food processing, chemical, and industrial applications where liquid dosing and quick process use are preferred.
Grade Details – Solution Grade
Appearance: Colorless or pale yellow clear solution
Assay as K₂SO₃: Min. 45% w/w
Purity: Min. 45% w/w
Impurities Potassium: 0.8% Max
pH: 9.0 – 10.0
Specific Gravity: 1.447 – 1.465
Applications
Food Preservation
Used as a preservative and antioxidant in selected food and beverage applications to help prevent oxidation and support product stability.
Photography & X-Ray Development
Used in photographic and X-ray development applications to help stabilize solutions and improve processing performance.
Water Treatment
Works as an oxygen scavenger and reducing agent to support water treatment and process stability.
Dyes & Chemical Processing
Used in dye fabrication, chemical synthesis, and industrial processes where reducing and stabilizing properties are required.
Pharmaceutical Applications
Used in selected pharmaceutical and laboratory applications where controlled chemical performance is important.
Petroleum Processes
Used in petroleum-related processes where oxygen control and chemical stability are required.
Agricultural Applications
Potassium Sulphite Solution can be used in suitable agricultural and crop-related applications where potassium-based sulphite chemistry is required.
Key Benefits
Available in Powder & Liquid Grades
Suitable for different handling, storage, dosing, and process requirements.
Strong Antioxidant Properties
Helps prevent oxidation and supports product stability in selected applications.
Effective Reducing Agent
Useful in chemical processing, photography, dyes, and industrial applications.
Good Solubility
Powder grades dissolve well in water, while liquid grade allows direct process use.
Multiple Grade Options
Available in pure grade, extra pure grade, and liquid solution form to match different industry needs.
Consistent Quality
Manufactured and supplied with focus on purity, stability, performance, and dependable results.
Why Choose Potassium Sulphite?
Potassium Sulphite is preferred by industries because of its wide application range, stable performance, and availability in different grades. Whether used as a preservative, antioxidant, reducing agent, oxygen scavenger, or process chemical, it delivers reliable results across food, photography, water treatment, pharmaceutical, chemical, and industrial sectors.
With powder and liquid solution options, Potassium Sulphite provides flexibility for different process requirements while ensuring quality, solubility, and dependable performance.

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