Calcium Sulfate— High-Purity Agricultural Grade
Calcium Sulfate (CaSO₄·2H₂O)
| Chemical Formula | CaSO₄·2H₂O |
| CAS Number | 10101-41-4 |
| Molecular Weight | 172.17 g/mol |
| Appearance | White or nearly white crystalline powder |
| Purity | ≥ 98% (Industrial Grade) / ≥ 99% (Food Grade) |
| Density | Approx. 2.32 g/cm³ |
| Solubility (20 °C) | 0.24 g / 100 mL water |
| Stability | Chemically stable, low reactivity, non-toxic |
Calcium Sulfate Product Overview
Risso Calcium Sulfate is a high-purity inorganic compound available in two forms: Anhydrous Calcium Sulfate (CaSO₄) and Calcium Sulfate Dihydrate (CaSO₄·2H₂O, gypsum). Both forms are suitable for industrial, agricultural, and food applications, providing excellent chemical stability and high calcium content.
Anhydrous Calcium Sulfate (CaSO₄): White crystalline or powdered form with 0% water content, widely used in construction, industrial processes, and as a concentrated calcium source.
Calcium Sulfate Dihydrate (CaSO₄·2H₂O, Gypsum): White crystalline form with 20.87% water content, ideal for soil improvement, construction additives, and food-grade applications.
Risso Calcium Sulfate features consistent purity, uniform particle size, and controlled solubility, ensuring reliable performance. Its versatility allows it to improve soil structure, enhance crop nutrient availability, act as a safe food-grade coagulant, and serve as a durable construction additive.
By offering both anhydrous and dihydrate forms, Risso provides flexible, high-quality solutions for agriculture, industry, and food processing, making it a preferred choice for professionals seeking performance, safety, and efficiency.
Typical Specifications
| Property | Specification | Description |
|---|---|---|
| Appearance | White crystalline powder | Fine, odorless, non-hygroscopic |
| Purity (as CaSO₄·2H₂O) | ≥98.0 % | Consistent high-quality grade |
| Moisture | ≤2.0 % | Ensures stability and flowability |
| Particle Size | 200–325 mesh (customizable) | Suitable for filler and soil applications |
| Heavy Metals (Pb) | ≤10 ppm | Food-grade safety compliance |
| Packaging | 25 kg / 1000 kg | Multi-layer PE-lined paper bag or jumbo bag |
Key Applications
1. Agriculture & Soil Improvement
- A soil conditioner to improve structure and prevent compaction
- A neutralizing agent for sodic and alkaline soils
- A supplement in fertilizers and compound blends
2. Construction & Building Materials
Used as a primary ingredient in plaster, drywall, and cement, Risso Calcium Sulfate enhances hardness, setting time, and strength. It offers superior workability, making it ideal for gypsum board, plaster of Paris, and decorative molding production.
3. Food & Beverage Industry
- A coagulating agent in tofu and dairy production
- A firming agent in processed foods
- A calcium fortifier in dietary supplements and beverages
4. Chemical & Industrial Uses
Drying agent for organic solvents and gases (anhydrous form)
Filler material in rubber, plastics, and coatings
Raw material for producing sulfuric acid and calcium compounds
Desiccant in laboratories and electronics manufacturing
Packaging & Storage
Standard Packaging: 25 kg kraft paper bags or 1000 kg jumbo bags
Storage Conditions: Store in a cool, dry, and ventilated environment; avoid moisture and direct sunlight
Shelf Life: 12 months under proper conditions
Handling: Avoid generating dust during handling; wear dust-proof masks and gloves for long-term exposure
Safety & Environmental Information
Dispose of in accordance with local environmental regulations.
Compatible with most materials; avoid mixing with strong acids during storage.
Certified under ISO 9001 quality management and ISO 14001 environmental standards.
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Why Choose Risso Calcium Sulfate
High Purity & Consistent Quality
Every batch is refined under strict quality control to meet international standards for agriculture, construction, and food-grade applications.Versatile Applications
Suitable for soil improvement, industrial filler, food processing, and chemical synthesis.Sustainable & Eco-Friendly
Derived from natural mineral sources, fully recyclable, and compliant with global green manufacturing standards.Reliable Supply & Customization
Risso offers flexible supply options—bulk orders, customized particle sizes, and private-label packaging—to meet industrial or agricultural scale demands.
