Product Overview
- Product Name: Potassium Sulfate
- Synonym: Anhydrous Potassium Sulfate
- CAS Number: 7778-80-5
- Molecular Formula: K₂SO₄
- Molecular Weight: 174.26
- Molar Mass: 174.26 g/mol
- Appearance: White crystalline powder / colorless crystals
- Applications: Agriculture, industry, food, pharmaceuticals, etc.
What is Potassium Sulfate?
Potassium Sulfate (chemical formula K₂SO₄) is a chemically neutral, chloride-free, and highly water-soluble inorganic sulfate. It is a widely used, high-efficiency potassium fertilizer and a versatile industrial raw material.Potassium Sulfate is an indispensable basic raw material that can support your production across agriculture, industry, food, and pharmaceuticals.
Its primary application is in agriculture, followed by uses in industry, food processing, and pharmaceuticals; it is a chemical product that spans both the bulk and fine chemical sectors.
Why choose Highassay?
Highassay is a professional supplier of Potassium Sulfate raw materials based in China, offering high-purity products across four grades: agricultural, industrial, food, and pharmaceutical. We maintain strict quality control standards for every grade, ensuring no grade mixing or adulteration.
We provide a stable supply of Potassium Sulfate with excellent batch-to-batch consistency, superior water solubility, and outstanding flowability. We also offer customized packaging and product solutions to meet your specific needs in agriculture, industrial processing, food additives, and pharmaceutical manufacturing.
Buy Potassium Sulfate, Highassay is a trusted, high-quality supplier.
Specification of Potassium Sulfate
- Specification of Potassium Sulfate
| Item | Agricultural Grade | Industrial Grade | Food Grade | Pharma Grade |
| K₂SO₄/ K₂O | K₂O ≥ 50% (standard) K₂O 51%–52% (premium) | K₂O ≥ 50%–52% High-purity up to 99% | ≥99.0% | ≥99.0% |
| Chloride (Cl⁻) | ≤1.0% | ≤0.05% | Complies with food standards | Complies with pharmacopoeia standards |
| Heavy metals | Meets agricultural limits | Strictly controlled | ≤10mg/kg | ≤5mg/kg |
| Moisture | ≤1.0% | ≤0.5% | ≤0.5% | ≤0.5% |
| Insoluble matter | ≤1.0% | ≤0.1% | ≤0.05% | ≤0.03% |
| pH value | 6–8 | 6–8 | 6–8 | 6–8 |
Potassium Chloride is a general-purpose potassium fertilizer with large yields, wide applications, and relatively low prices; while Potassium Sulfate, due to its chlorine-free and sulfur-supplementing properties, is a specialized high-end potassium fertilizer, mainly used for cash crops and chlorine-sensitive crops. Their market positioning differs.
Potassium Sulfate is an ideal chloride-free potassium fertilizer for plants. It provides crops with sufficient potassium and sulfur without causing chloride damage. It is especially suitable for cash crops such as tobacco, grapes, and potatoes.
It acts as a fluxing and fining agent to reduce melting temperature, eliminate air bubbles, and improve the transparency and uniformity of glass products.
Potassium Sulfate has a melting point of approximately 1069°C, which allows it to remain stable under moderate thermal processing conditions.
Potassium Sulfate Grades
Agricultural-grade Potassium Sulfate
Highassay agricultural-grade Potassium Sulfate is a high-quality chloride-free potash fertilizer raw material.
- Standard grade: K₂O ≥ 50%
- Premium grade: K₂O 51%–52%
- Appearance: white or light yellow crystals, good fluidity, low caking, excellent water solubility.
- Impurity content fully meets agricultural safety standards.
- Suitable for compound fertilizer factories, large planting bases, agricultural distributors.
Industrial-Grade Potassium Sulfate
Industrial-grade Potassium Sulfate serves as a versatile auxiliary agent in industrial manufacturing—for instance, as a fining agent in the glass industry or an intermediate in dye production.
- Compared to agricultural-grade Potassium Sulfate, our industrial-grade product offers you higher purity and stricter impurity controls.The K₂SO₄content can reach over 98.5%.
- Our industrial-grade Potassium Sulfate supports your operations in glass manufacturing, electroplating, dye production, and chemical synthesis.
- It is the ideal choice for you if you run an industrial business that demands consistent, long-term supply.
Food-grade/Pharmaceutical-grade Potassium Sulfate
Food Grade Potassium Sulfate
- It can be used as a food additive, mainly for flavor regulation, nutrition fortification and dough improvement.
- If you are involved in food production, this product can safely and compliantly meet your formulation needs.
Pharmaceutical Grade Potassium Sulfate
- Used as pharmaceutical excipient, raw material for electrolyte supplements, laxatives and diuretics.
- If you are engaged in pharmaceutical R&D or production, our pharmaceutical-grade Potassium Sulfate offers a reliable supply of high-purity, high-safety raw materials.
Suitable for you if you are a food manufacturer, pharmaceutical factory, R&D institution.
Potassium Sulfate Sales Information
Potassium Sulfate Packaging
- Standard packaging: We typically use 25kg kraft paper bags, 50kg woven plastic bags, and 1000kg jumbo bags.
- Packaging varies by product grade; we can also provide customized packaging upon request.
Potassium Sulfate Pricing
- Price hierarchy: Agricultural grade < Industrial grade < Food grade < Pharmaceutical grade.
- For an accurate quote, please provide: product grade, purchase quantity, preferred packaging, and delivery terms. We will respond within 24 hours.
Potassium Sulfate MOQ
- MOQ: 5 MT; purchasing a full container (20GP) is more cost-effective.
- Free samples are available for testing purposes, with shipping costs borne by the buyer; please contact customer service for details.
Note: Raw materials, packaging, and MOQs vary slightly depending on the grade of Potassium Sulfate; please contact us for specific details.
